Unclear how to remove and cleanup module memory in ORC2 #74
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Hi @suedama1756, Releasing module resources in ORCv2 is still on the to-do list unfortunately. I hope to tackle that in the LLVM 11 timeframe. What is your use case for removing resources? I might be able to add limited support for removal to LLVM 10, or advise you of the best work-around until we have proper resource management. |
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Hi @lhames Thanks for getting back to me. In my case I am converting generic SQL like queries passed in by users into executable code. These queries are treated as subscriptions and will be run over new data as it is received. Data is received at high frequency, hence the requirement for optimal re-evaluation speed (I have benchmarked various solutions and LLVM currently provides the best performance by far here). The query binds to many "pre-compiled" functions defined in a separate IRModule. Currently each query is placed into a new IRModule within the same dynlib as the shared code. Users will submit/modify queries throughout the day. Ideally I would like to clean dead query module memory / resources based on some yet to be defined policy. One idea I've been considering in place of module removal is to "switch" active ExecutionSession, e.g. copy queries that are still in use to an entirely new session, context, etc. make that the new active session and discard the old session. This will likely occur in some background thread. I'm hoping that all resources used by an ExecutionSession would be cleaned up with this approach? I've also experimented with removing symbols from the dynlib, its not clear though whether this returns any executable memory or just the symbol registration, the code seems to suggest its just registration. |
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Any update on this, will the session switching approach correctly remove resources? |
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Hi @suedama1756. Sorry for the delayed reply — I’m out on vacation at the moment. Session switching should release the resources (this sounds like the best option available right now), removing symbols from a JITDylib will not. The two resource-release approaches I am considering are: (1) Allowing removal of resources associated with a VModuleKey. This would allow removal on a per-module basis including freeing resources associated with that module. (2) Providing a dlclose-like API that would free all resources associated with a JITDylib. It sounds like your use case could be built on top of either of those in the future, allowing you to avoid manually maintaining multiple ExecutionSessions. |
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Thanks for getting back to me, this is what I suspected. Something that may give you ideas is the c# Expression or DynamicMethod APIs. With this API you can JIT a function on the fly, when the function is no longer references its resources are automatically cleaned. I realize this would be more complex to implement, especially without a GC, however, it would also be awesome. I'm looking at using these techniques in my implementation: https://preshing.com/20160726/using-quiescent-states-to-reclaim-memory/ which provide GC like features. The VModuleKey approach makes sense in the mean time as that would at least provide the same functionality as the previous JIT implementation. |
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@suedama1756 Yep. We can’t add automatic garbage collection of resources into the base API because we want to be able to JIT unmodified compiled C (e.g. from object caches). However we can aim to provide an API that automatic GC could be built on top of. I last thought about the resource release problem a while back, and now recall my preferred solution based on the following constraints: (1) We need to be able to emulate dlclose, (2) Default behavior should be simple, (3) We want to support reoptimization naturally*. The solution was VModuleKey-based resource tracking, with a default VModuleKey supplied by each JITDylib. If you want to be able to independently remove a module from a JITDylib then you take on responsibility for holding/removing its VModuleKey. Otherwise you do nothing, the JITDylib’s VModuleKey is used, and the resources are freed when the JITDylib is closed. Implementation of this scheme will not make it into LLVM 10, but I am hopeful that it will be available in LLVM 11. * Elaborating slightly: By re-optimization I mean generating a new, more optimized copy of a module. It can be difficult to tell in advance (1) which modules we will want to re-optimize, and (2) when the less-optimized versions will become unreferenced. If we want to free memory for the less-optimized copies we would either have to allocate a new JITDylib for each module (and play linkage games to get them to link correctly), or support VModuleKey based resource management. |
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@llvm/issue-subscribers-orcjit |
This is now handled by
This ended up being implemented slightly differently. We have a real dlclose-like operation in the ORC runtime, but it deliberately doesn't free resources, as that would preclude re-running our dlopen-like operation, which we don't want to do (since dlopen-dlclose-dlopen works for real dylibs, and we're aiming to have JITDylibs behave the same way). Instead we leave these operations separate: dlclose runs deinitializers (basically static destructors), but leaves the JIT'd memory in-place. With that I think we've solved this issue, so I'm going to close this out. @suedama1756 -- if any of the docs don't answer your question feel free to reopen this (or a new issue) and let me know what could be improved. |
alexanderguy
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* Remove lddw instruction * Add suggestions
kadircet
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following ASAN failure is fixed with this patch.
We store cleanups in EvalInfo, which are usually run with certain
ScopeRAII objects.
We can have temporaries in the cleanup stack, backed by CallStackFrame.
If such temporaries aren't destroyed before the enclosing
CallStackFrame, we end up accessing the freed temporary to run the
cleanup.
```
=================================================================
==553356==ERROR: AddressSanitizer: heap-use-after-free on address 0x7c63f05a65b0 at pc 0x561e4add6ae7 bp 0x7fff430f7770 sp 0x7fff430f7768
READ of size 4 at 0x7c63f05a65b0 thread T0
#0 0x561e4add6ae6 in clang::APValue::operator=(clang::APValue&&) third_party/llvm/llvm-project/clang/lib/AST/APValue.cpp:394:9
#1 0x561e4b41fd0b in (anonymous namespace)::Cleanup::endLifetime((anonymous namespace)::EvalInfo&, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:749:27
#2 0x561e4b4d42a7 in (anonymous namespace)::ScopeRAII<((anonymous namespace)::ScopeKind)1>::cleanup((anonymous namespace)::EvalInfo&, bool, unsigned int) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:1449:41
llvm#3 0x561e4b4246ec in destroy third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:1427:17
llvm#4 0x561e4b4246ec in ~ScopeRAII third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:1433:9
llvm#5 0x561e4b4246ec in EvaluateCond((anonymous namespace)::EvalInfo&, clang::VarDecl const*, clang::Expr const*, bool&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5185:1
llvm#6 0x561e4b41ea8c in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5555:17
llvm#7 0x561e4b423755 in EvaluateLoopBody((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5221:24
llvm#8 0x561e4b41d597 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5635:28
llvm#9 0x561e4b41d341 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5521:28
llvm#10 0x561e4b40113c in HandleFunctionCall(clang::SourceLocation, clang::FunctionDecl const*, (anonymous namespace)::LValue const*, clang::Expr const*, llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, clang::Stmt const*, (anonymous namespace)::EvalInfo&, clang::APValue&, (anonymous namespace)::LValue const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6520:24
llvm#11 0x561e4b4c9652 in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8332:10
llvm#12 0x561e4b4c9652 in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#13 0x561e4b4c9652 in visitNonBuiltinCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9749:28
llvm#14 0x561e4b4c9652 in (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9763:12
llvm#15 0x561e4b4c3e5b in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::PointerExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#16 0x561e4b3ff820 in EvaluatePointer third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9458:60
llvm#17 0x561e4b3ff820 in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16343:10
llvm#18 0x561e4b41f204 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5511:17
llvm#19 0x561e4b41d341 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5521:28
llvm#20 0x561e4b40113c in HandleFunctionCall(clang::SourceLocation, clang::FunctionDecl const*, (anonymous namespace)::LValue const*, clang::Expr const*, llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, clang::Stmt const*, (anonymous namespace)::EvalInfo&, clang::APValue&, (anonymous namespace)::LValue const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6520:24
llvm#21 0x561e4b4c9652 in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8332:10
llvm#22 0x561e4b4c9652 in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#23 0x561e4b4c9652 in visitNonBuiltinCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9749:28
llvm#24 0x561e4b4c9652 in (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9763:12
llvm#25 0x561e4b4c3e5b in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::PointerExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#26 0x561e4b3ff820 in EvaluatePointer third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9458:60
llvm#27 0x561e4b3ff820 in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16343:10
llvm#28 0x561e4b4ad3c2 in EvaluateAsBooleanCondition third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:2742:8
llvm#29 0x561e4b4ad3c2 in (anonymous namespace)::IntExprEvaluator::VisitCastExpr(clang::CastExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:14877:10
llvm#30 0x561e4b49f192 in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) third_party/llvm/llvm-project/clang/include/clang/AST/StmtVisitor.h
llvm#31 0x561e4b3ff8af in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16339:41
llvm#32 0x561e4b4a0dd2 in EvaluateAsBooleanCondition third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:2742:8
llvm#33 0x561e4b4a0dd2 in (anonymous namespace)::IntExprEvaluator::VisitUnaryOperator(clang::UnaryOperator const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:14795:10
llvm#34 0x561e4b49f0db in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) third_party/llvm/llvm-project/clang/include/clang/AST/StmtVisitor.h
llvm#35 0x561e4b3ff8af in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16339:41
llvm#36 0x561e4b3fbe35 in EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16455:8
llvm#37 0x561e4b3fc278 in clang::Expr::EvaluateForOverflow(clang::ASTContext const&) const third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16903:11
llvm#38 0x561e4a020e69 in clang::Sema::CheckForIntOverflow(clang::Expr const*) third_party/crosstool/v18/stable/src/libcxx/include/__memory/uninitialized_algorithms.h
llvm#39 0x561e4a021cd7 in clang::Sema::CheckCompletedExpr(clang::Expr*, clang::SourceLocation, bool) third_party/llvm/llvm-project/clang/lib/Sema/SemaChecking.cpp:12989:5
llvm#40 0x561e4a4b9d2e in clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) third_party/llvm/llvm-project/clang/lib/Sema/SemaExprCXX.cpp:9225:3
llvm#41 0x561e4a372e20 in MakeFullExpr third_party/llvm/llvm-project/clang/include/clang/Sema/Sema.h:7292:9
llvm#42 0x561e4a372e20 in clang::Sema::ActOnCondition(clang::Scope*, clang::SourceLocation, clang::Expr*, clang::Sema::ConditionKind, bool) third_party/llvm/llvm-project/clang/lib/Sema/SemaExpr.cpp:20363:26
llvm#43 0x561e49b5407d in clang::Parser::ParseCXXCondition(clang::ActionResult<clang::Stmt*, true>*, clang::SourceLocation, clang::Sema::ConditionKind, bool, clang::Parser::ForRangeInfo*, bool) third_party/llvm/llvm-project/clang/lib/Parse/ParseExprCXX.cpp:2204:20
llvm#44 0x561e49c000a8 in clang::Parser::ParseParenExprOrCondition(clang::ActionResult<clang::Stmt*, true>*, clang::Sema::ConditionResult&, clang::SourceLocation, clang::Sema::ConditionKind, clang::SourceLocation&, clang::SourceLocation&) third_party/llvm/llvm-project/clang/lib/Parse/ParseStmt.cpp:1376:12
llvm#45 0x561e49bf6c2f in clang::Parser::ParseIfStatement(clang::SourceLocation*) third_party/llvm/llvm-project/clang/lib/Parse/ParseStmt.cpp:1587:9
llvm#46 0x561e49bf2d6d in clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) third_party/llvm/llvm-project/clang/lib/Parse/ParseStmt.cpp:325:12
llvm#47 0x561e49bf0a6e in clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) third_party/llvm/llvm-project/clang/lib/Parse/ParseStmt.cpp:125:20
llvm#48 0x561e49bff57d in clang::Parser::ParseCompoundStatementBody(bool) third_party/llvm/llvm-project/clang/lib/Parse/ParseStmt.cpp:1267:11
llvm#49 0x561e49c0136e in clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) third_party/llvm/llvm-project/clang/lib/Parse/ParseStmt.cpp:2577:21
llvm#50 0x561e49afa4fd in clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) third_party/llvm/llvm-project/clang/lib/Parse/Parser.cpp:1520:10
llvm#51 0x561e49ba6e44 in clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) third_party/llvm/llvm-project/clang/lib/Parse/ParseDecl.cpp:2460:17
llvm#52 0x561e49af8746 in clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) third_party/llvm/llvm-project/clang/lib/Parse/Parser.cpp:1244:10
llvm#53 0x561e49af79f8 in clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) third_party/llvm/llvm-project/clang/lib/Parse/Parser.cpp:1266:12
llvm#54 0x561e49af5d96 in clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) third_party/llvm/llvm-project/clang/lib/Parse/Parser.cpp:1069:14
llvm#55 0x561e49b6c42c in clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) third_party/llvm/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:276:7
llvm#56 0x561e49b6c5d7 in clang::Parser::ParseInnerNamespace(llvm::SmallVector<clang::Parser::InnerNamespaceInfo, 4u> const&, unsigned int, clang::SourceLocation&, clang::ParsedAttributes&, clang::BalancedDelimiterTracker&) third_party/llvm/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:298:3
llvm#57 0x561e49b6b7c3 in clang::Parser::ParseNamespace(clang::DeclaratorContext, clang::SourceLocation&, clang::SourceLocation) third_party/llvm/llvm-project/clang/lib/Parse/ParseDeclCXX.cpp:253:3
llvm#58 0x561e49ba337a in clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::ParsedAttributes&, clang::ParsedAttributes&, clang::SourceLocation*) third_party/llvm/llvm-project/clang/lib/Parse/ParseDecl.cpp
llvm#59 0x561e49af563a in clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) third_party/llvm/llvm-project/clang/lib/Parse/Parser.cpp:985:14
llvm#60 0x561e49af3779 in clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) third_party/llvm/llvm-project/clang/lib/Parse/Parser.cpp:758:12
llvm#61 0x561e49aec6ae in clang::ParseAST(clang::Sema&, bool, bool) third_party/llvm/llvm-project/clang/lib/Parse/ParseAST.cpp:171:20
llvm#62 0x561e496f13ae in clang::ASTFrontendAction::ExecuteAction() third_party/llvm/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1191:3
llvm#63 0x561e496f0874 in clang::FrontendAction::Execute() third_party/llvm/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1077:8
llvm#64 0x561e49644511 in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) third_party/llvm/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:1062:33
llvm#65 0x561e47ffe1b9 in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) third_party/llvm/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:296:25
llvm#66 0x561e47fee631 in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) third_party/llvm/llvm-project/clang/tools/driver/cc1_main.cpp:286:15
llvm#67 0x561e47fe9912 in ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) third_party/llvm/llvm-project/clang/tools/driver/driver.cpp:218:12
llvm#68 0x561e47fec7e6 in operator() third_party/llvm/llvm-project/clang/tools/driver/driver.cpp:360:14
llvm#69 0x561e47fec7e6 in int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::$_0>(long, llvm::SmallVectorImpl<char const*>&) third_party/llvm/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:12
#70 0x561e498bc531 in operator() third_party/llvm/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:12
llvm#71 0x561e498bc531 in operator() third_party/llvm/llvm-project/clang/lib/Driver/Job.cpp:437:34
llvm#72 0x561e498bc531 in void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::__u::optional<llvm::StringRef>>, std::__u::basic_string<char, std::__u::char_traits<char>, std::__u::allocator<char>>*, bool*) const::$_0>(long) third_party/llvm/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:46:12
llvm#73 0x561e4ff969e8 in operator() third_party/llvm/llvm-project/llvm/include/llvm/ADT/STLFunctionalExtras.h:69:12
llvm#74 0x561e4ff969e8 in llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) third_party/llvm/llvm-project/llvm/lib/Support/CrashRecoveryContext.cpp:426:3
llvm#75 0x561e498bb331 in clang::driver::CC1Command::Execute(llvm::ArrayRef<std::__u::optional<llvm::StringRef>>, std::__u::basic_string<char, std::__u::char_traits<char>, std::__u::allocator<char>>*, bool*) const third_party/llvm/llvm-project/clang/lib/Driver/Job.cpp:437:12
llvm#76 0x561e49860e38 in clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const third_party/llvm/llvm-project/clang/lib/Driver/Compilation.cpp:196:15
llvm#77 0x561e49861154 in clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::__u::pair<int, clang::driver::Command const*>>&, bool) const third_party/llvm/llvm-project/clang/lib/Driver/Compilation.cpp:250:19
llvm#78 0x561e49886037 in clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::__u::pair<int, clang::driver::Command const*>>&) third_party/llvm/llvm-project/clang/lib/Driver/Driver.cpp:1968:5
llvm#79 0x561e47fe8c7d in clang_main(int, char**, llvm::ToolContext const&) third_party/llvm/llvm-project/clang/tools/driver/driver.cpp:396:21
llvm#80 0x561e47fe6ae7 in main blaze-out/k8-opt-asan/bin/third_party/llvm/llvm-project/clang/clang-driver.cpp:17:10
llvm#81 0x7fb3f13c33d3 in __libc_start_main (/usr/grte/v5/lib64/libc.so.6+0x613d3) (BuildId: 9a996398ce14a94560b0c642eb4f6e94)
llvm#82 0x561e47f0a229 in _start /usr/grte/v5/debug-src/src/csu/../sysdeps/x86_64/start.S:120
0x7c63f05a65b0 is located 48 bytes inside of 104-byte region [0x7c63f05a6580,0x7c63f05a65e8)
freed by thread T0 here:
#0 0x561e47fe5342 in operator delete(void*, unsigned long) third_party/llvm/llvm-project/compiler-rt/lib/asan/asan_new_delete.cpp:155:3
#1 0x561e4b4c2fcc in __libcpp_operator_delete<void *, unsigned long> third_party/crosstool/v18/stable/src/libcxx/include/new:286:3
#2 0x561e4b4c2fcc in __do_deallocate_handle_size<> third_party/crosstool/v18/stable/src/libcxx/include/new:310:10
llvm#3 0x561e4b4c2fcc in __libcpp_deallocate third_party/crosstool/v18/stable/src/libcxx/include/new:323:12
llvm#4 0x561e4b4c2fcc in deallocate third_party/crosstool/v18/stable/src/libcxx/include/__memory/allocator.h:135:7
llvm#5 0x561e4b4c2fcc in deallocate third_party/crosstool/v18/stable/src/libcxx/include/__memory/allocator_traits.h:313:9
llvm#6 0x561e4b4c2fcc in std::__u::__tree<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, std::__u::__map_value_compare<std::__u::pair<void const*, unsigned int>, std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, std::__u::less<std::__u::pair<void const*, unsigned int>>, true>, std::__u::allocator<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>>>::destroy(std::__u::__tree_node<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, void*>*) third_party/crosstool/v18/stable/src/libcxx/include/__tree:1549:5
llvm#7 0x561e4b400340 in ~__tree third_party/crosstool/v18/stable/src/libcxx/include/__tree:1539:3
llvm#8 0x561e4b400340 in ~map third_party/crosstool/v18/stable/src/libcxx/include/map:1138:112
llvm#9 0x561e4b400340 in (anonymous namespace)::CallStackFrame::~CallStackFrame() third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:1524:1
llvm#10 0x561e4b49697b in HandleConstructorCall(clang::Expr const*, (anonymous namespace)::LValue const&, (anonymous namespace)::CallRef, clang::CXXConstructorDecl const*, (anonymous namespace)::EvalInfo&, clang::APValue&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6742:1
llvm#11 0x561e4b400cca in HandleConstructorCall(clang::Expr const*, (anonymous namespace)::LValue const&, llvm::ArrayRef<clang::Expr const*>, clang::CXXConstructorDecl const*, (anonymous namespace)::EvalInfo&, clang::APValue&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6753:10
llvm#12 0x561e4b45cfae in (anonymous namespace)::RecordExprEvaluator::VisitCXXConstructExpr(clang::CXXConstructExpr const*, clang::QualType) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:10792:10
llvm#13 0x561e4b45dae7 in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::RecordExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#14 0x561e4b3f963e in EvaluateRecord third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:10917:50
llvm#15 0x561e4b3f963e in EvaluateInPlace(clang::APValue&, (anonymous namespace)::EvalInfo&, (anonymous namespace)::LValue const&, clang::Expr const*, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16425:14
llvm#16 0x561e4b3ff0b3 in EvaluateCallArg(clang::ParmVarDecl const*, clang::Expr const*, (anonymous namespace)::CallRef, (anonymous namespace)::EvalInfo&, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6403:8
llvm#17 0x561e4b440530 in EvaluateArgs(llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, (anonymous namespace)::EvalInfo&, clang::FunctionDecl const*, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6442:10
llvm#18 0x561e4b4a503e in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8298:12
llvm#19 0x561e4b4a503e in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#20 0x561e4b4a503e in (anonymous namespace)::IntExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:12700:33
llvm#21 0x561e4b49f1a5 in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) third_party/llvm/llvm-project/clang/include/clang/AST/StmtVisitor.h
llvm#22 0x561e4b3ff8af in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16339:41
llvm#23 0x561e4b424658 in EvaluateAsBooleanCondition third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:2742:8
llvm#24 0x561e4b424658 in EvaluateCond((anonymous namespace)::EvalInfo&, clang::VarDecl const*, clang::Expr const*, bool&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5182:8
llvm#25 0x561e4b41ea8c in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5555:17
llvm#26 0x561e4b423755 in EvaluateLoopBody((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5221:24
llvm#27 0x561e4b41d597 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5635:28
llvm#28 0x561e4b41d341 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5521:28
llvm#29 0x561e4b40113c in HandleFunctionCall(clang::SourceLocation, clang::FunctionDecl const*, (anonymous namespace)::LValue const*, clang::Expr const*, llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, clang::Stmt const*, (anonymous namespace)::EvalInfo&, clang::APValue&, (anonymous namespace)::LValue const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6520:24
llvm#30 0x561e4b4c9652 in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8332:10
llvm#31 0x561e4b4c9652 in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#32 0x561e4b4c9652 in visitNonBuiltinCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9749:28
llvm#33 0x561e4b4c9652 in (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9763:12
llvm#34 0x561e4b4c3e5b in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::PointerExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#35 0x561e4b3ff820 in EvaluatePointer third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9458:60
llvm#36 0x561e4b3ff820 in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16343:10
llvm#37 0x561e4b41f204 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5511:17
llvm#38 0x561e4b41d341 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5521:28
llvm#39 0x561e4b40113c in HandleFunctionCall(clang::SourceLocation, clang::FunctionDecl const*, (anonymous namespace)::LValue const*, clang::Expr const*, llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, clang::Stmt const*, (anonymous namespace)::EvalInfo&, clang::APValue&, (anonymous namespace)::LValue const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6520:24
llvm#40 0x561e4b4c9652 in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8332:10
llvm#41 0x561e4b4c9652 in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#42 0x561e4b4c9652 in visitNonBuiltinCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9749:28
llvm#43 0x561e4b4c9652 in (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9763:12
llvm#44 0x561e4b4c3e5b in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::PointerExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#45 0x561e4b3ff820 in EvaluatePointer third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9458:60
llvm#46 0x561e4b3ff820 in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16343:10
llvm#47 0x561e4b4ad3c2 in EvaluateAsBooleanCondition third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:2742:8
llvm#48 0x561e4b4ad3c2 in (anonymous namespace)::IntExprEvaluator::VisitCastExpr(clang::CastExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:14877:10
llvm#49 0x561e4b49f192 in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) third_party/llvm/llvm-project/clang/include/clang/AST/StmtVisitor.h
previously allocated by thread T0 here:
#0 0x561e47fe46bd in operator new(unsigned long) third_party/llvm/llvm-project/compiler-rt/lib/asan/asan_new_delete.cpp:86:3
#1 0x561e4b424d00 in __libcpp_operator_new<unsigned long> third_party/crosstool/v18/stable/src/libcxx/include/new:277:10
#2 0x561e4b424d00 in __libcpp_allocate third_party/crosstool/v18/stable/src/libcxx/include/new:301:10
llvm#3 0x561e4b424d00 in allocate third_party/crosstool/v18/stable/src/libcxx/include/__memory/allocator.h:120:32
llvm#4 0x561e4b424d00 in allocate third_party/crosstool/v18/stable/src/libcxx/include/__memory/allocator_traits.h:281:16
llvm#5 0x561e4b424d00 in __construct_node<const std::__u::piecewise_construct_t &, std::__u::tuple<std::__u::pair<const void *, unsigned int> &&>, std::__u::tuple<> > third_party/crosstool/v18/stable/src/libcxx/include/__tree:1820:21
llvm#6 0x561e4b424d00 in std::__u::pair<std::__u::__tree_iterator<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, std::__u::__tree_node<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, void*>*, long>, bool> std::__u::__tree<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, std::__u::__map_value_compare<std::__u::pair<void const*, unsigned int>, std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>, std::__u::less<std::__u::pair<void const*, unsigned int>>, true>, std::__u::allocator<std::__u::__value_type<std::__u::pair<void const*, unsigned int>, clang::APValue>>>::__emplace_unique_key_args<std::__u::pair<void const*, unsigned int>, std::__u::piecewise_construct_t const&, std::__u::tuple<std::__u::pair<void const*, unsigned int>&&>, std::__u::tuple<>>(std::__u::pair<void const*, unsigned int> const&, std::__u::piecewise_construct_t const&, std::__u::tuple<std::__u::pair<void const*, unsigned int>&&>&&, std::__u::tuple<>&&) third_party/crosstool/v18/stable/src/libcxx/include/__tree:1787:25
llvm#7 0x561e4b424a03 in operator[] third_party/crosstool/v18/stable/src/libcxx/include/map:1531:8
llvm#8 0x561e4b424a03 in (anonymous namespace)::CallStackFrame::createLocal(clang::APValue::LValueBase, void const*, clang::QualType, (anonymous namespace)::ScopeKind) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:1963:21
llvm#9 0x561e4b42bd95 in clang::APValue& (anonymous namespace)::CallStackFrame::createTemporary<clang::Expr>(clang::Expr const*, clang::QualType, (anonymous namespace)::ScopeKind, (anonymous namespace)::LValue&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:1944:10
llvm#10 0x561e4b3ffd17 in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16367:27
llvm#11 0x561e4b40429c in handleLValueToRValueConversion((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::QualType, (anonymous namespace)::LValue const&, clang::APValue&, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:4518:12
llvm#12 0x561e4b496e9c in handleTrivialCopy((anonymous namespace)::EvalInfo&, clang::ParmVarDecl const*, clang::Expr const*, clang::APValue&, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6469:10
llvm#13 0x561e4b494fdd in HandleConstructorCall(clang::Expr const*, (anonymous namespace)::LValue const&, (anonymous namespace)::CallRef, clang::CXXConstructorDecl const*, (anonymous namespace)::EvalInfo&, clang::APValue&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6582:12
llvm#14 0x561e4b400cca in HandleConstructorCall(clang::Expr const*, (anonymous namespace)::LValue const&, llvm::ArrayRef<clang::Expr const*>, clang::CXXConstructorDecl const*, (anonymous namespace)::EvalInfo&, clang::APValue&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6753:10
llvm#15 0x561e4b45cfae in (anonymous namespace)::RecordExprEvaluator::VisitCXXConstructExpr(clang::CXXConstructExpr const*, clang::QualType) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:10792:10
llvm#16 0x561e4b45dae7 in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::RecordExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#17 0x561e4b3f963e in EvaluateRecord third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:10917:50
llvm#18 0x561e4b3f963e in EvaluateInPlace(clang::APValue&, (anonymous namespace)::EvalInfo&, (anonymous namespace)::LValue const&, clang::Expr const*, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16425:14
llvm#19 0x561e4b3ff0b3 in EvaluateCallArg(clang::ParmVarDecl const*, clang::Expr const*, (anonymous namespace)::CallRef, (anonymous namespace)::EvalInfo&, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6403:8
llvm#20 0x561e4b440530 in EvaluateArgs(llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, (anonymous namespace)::EvalInfo&, clang::FunctionDecl const*, bool) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6442:10
llvm#21 0x561e4b4a503e in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8298:12
llvm#22 0x561e4b4a503e in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#23 0x561e4b4a503e in (anonymous namespace)::IntExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:12700:33
llvm#24 0x561e4b49f1a5 in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::IntExprEvaluator, bool>::Visit(clang::Stmt const*) third_party/llvm/llvm-project/clang/include/clang/AST/StmtVisitor.h
llvm#25 0x561e4b3ff8af in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16339:41
llvm#26 0x561e4b424658 in EvaluateAsBooleanCondition third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:2742:8
llvm#27 0x561e4b424658 in EvaluateCond((anonymous namespace)::EvalInfo&, clang::VarDecl const*, clang::Expr const*, bool&) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5182:8
llvm#28 0x561e4b41ea8c in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5555:17
llvm#29 0x561e4b423755 in EvaluateLoopBody((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5221:24
llvm#30 0x561e4b41d597 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5635:28
llvm#31 0x561e4b41d341 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5521:28
llvm#32 0x561e4b40113c in HandleFunctionCall(clang::SourceLocation, clang::FunctionDecl const*, (anonymous namespace)::LValue const*, clang::Expr const*, llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, clang::Stmt const*, (anonymous namespace)::EvalInfo&, clang::APValue&, (anonymous namespace)::LValue const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6520:24
llvm#33 0x561e4b4c9652 in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8332:10
llvm#34 0x561e4b4c9652 in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#35 0x561e4b4c9652 in visitNonBuiltinCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9749:28
llvm#36 0x561e4b4c9652 in (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9763:12
llvm#37 0x561e4b4c3e5b in clang::StmtVisitorBase<llvm::make_const_ptr, (anonymous namespace)::PointerExprEvaluator, bool>::Visit(clang::Stmt const*) blaze-out/k8-opt-asan/genfiles/third_party/llvm/llvm-project/clang/include/clang/AST/StmtNodes.inc
llvm#38 0x561e4b3ff820 in EvaluatePointer third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9458:60
llvm#39 0x561e4b3ff820 in Evaluate(clang::APValue&, (anonymous namespace)::EvalInfo&, clang::Expr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:16343:10
llvm#40 0x561e4b41f204 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5511:17
llvm#41 0x561e4b41d341 in EvaluateStmt((anonymous namespace)::StmtResult&, (anonymous namespace)::EvalInfo&, clang::Stmt const*, clang::SwitchCase const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:5521:28
llvm#42 0x561e4b40113c in HandleFunctionCall(clang::SourceLocation, clang::FunctionDecl const*, (anonymous namespace)::LValue const*, clang::Expr const*, llvm::ArrayRef<clang::Expr const*>, (anonymous namespace)::CallRef, clang::Stmt const*, (anonymous namespace)::EvalInfo&, clang::APValue&, (anonymous namespace)::LValue const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:6520:24
llvm#43 0x561e4b4c9652 in handleCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8332:10
llvm#44 0x561e4b4c9652 in VisitCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:8132:10
llvm#45 0x561e4b4c9652 in visitNonBuiltinCallExpr third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9749:28
llvm#46 0x561e4b4c9652 in (anonymous namespace)::PointerExprEvaluator::VisitCallExpr(clang::CallExpr const*) third_party/llvm/llvm-project/clang/lib/AST/ExprConstant.cpp:9763:12
```
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I'm using LLVM V9.0 and cannot determine the correct way to release resources for a module in ORC2 JIT. The documentation indicates work is still ongoing on resource management, yet also says the "legacy" API is deprecated. I don't want to revert to the deprecated ORC1 and it seems overkill to create an ExecutionSession per JIT module, can anyone help?
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