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deps: cherry-pick e020aae394 from V8 upstream #14913

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deps: cherry-pick e020aae394 from V8 upstream #14913

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9 changes: 8 additions & 1 deletion deps/v8/src/trap-handler/handler-shared.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,14 @@ namespace v8 {
namespace internal {
namespace trap_handler {

THREAD_LOCAL bool g_thread_in_wasm_code = false;
// We declare this as int rather than bool as a workaround for a glibc bug, in
// which the dynamic loader cannot handle executables whose TLS area is only
// 1 byte in size; see https://sourceware.org/bugzilla/show_bug.cgi?id=14898.
THREAD_LOCAL int g_thread_in_wasm_code = false;

static_assert(sizeof(g_thread_in_wasm_code) > 1,
"sizeof(thread_local_var) must be > 1, see "
"https://sourceware.org/bugzilla/show_bug.cgi?id=14898");

size_t gNumCodeObjects = 0;
CodeProtectionInfoListEntry* gCodeObjects = nullptr;
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2 changes: 1 addition & 1 deletion deps/v8/src/trap-handler/trap-handler.h
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Expand Up @@ -65,7 +65,7 @@ inline bool UseTrapHandler() {
return FLAG_wasm_trap_handler && V8_TRAP_HANDLER_SUPPORTED;
}

extern THREAD_LOCAL bool g_thread_in_wasm_code;
extern THREAD_LOCAL int g_thread_in_wasm_code;

inline bool IsThreadInWasm() { return g_thread_in_wasm_code; }

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