Add posix stack traces.

microsoft · Apr 2, 2020 · b5dfc69 · b5dfc69
1 parent e6244f5
commit b5dfc69
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -147,6 +147,8 @@ if(NOT DEFINED SNMALLOC_ONLY_HEADER_LIBRARY)
     set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /DEBUG")
   else()
     add_compile_options(-fno-exceptions -fno-rtti -g -ftls-model=initial-exec -fomit-frame-pointer)
+    # Get better stack traces in CI.
+    add_link_options(-rdynamic)
 
     if((${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64") OR
        (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86") OR

diff --git a/src/pal/pal_posix.h b/src/pal/pal_posix.h
@@ -2,11 +2,12 @@
 
 #include "../ds/address.h"
 #include "../mem/allocconfig.h"
-
+#include <execinfo.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 extern "C" int puts(const char* str);
 
@@ -41,8 +42,16 @@ namespace snmalloc
      */
     static void error(const char* const str) noexcept
     {
+      constexpr int SIZE = 1024;
+      void *buffer[SIZE];
+
       puts(str);
       fflush(stdout);
+
+      auto nptrs = backtrace(buffer, SIZE);
+      backtrace_symbols_fd(buffer, nptrs, STDOUT_FILENO);
+      fflush(stdout);
+
       abort();
     }