TEMP: Try to get better backtraces with ASan.

Author: bernhardu

compiler-rt/CMakeLists.txt

@@ -354,8 +354,13 @@ endif()
 append_list_if(COMPILER_RT_HAS_FNO_BUILTIN_FLAG -fno-builtin SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions SANITIZER_COMMON_CFLAGS)
 if(NOT COMPILER_RT_DEBUG AND NOT APPLE)
-  append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS)
+  #append_list_if(COMPILER_RT_HAS_FOMIT_FRAME_POINTER_FLAG -fomit-frame-pointer SANITIZER_COMMON_CFLAGS)
 endif()
+
+list(APPEND SANITIZER_COMMON_CFLAGS -fno-omit-frame-pointer)
+list(APPEND SANITIZER_COMMON_CFLAGS -mno-omit-leaf-frame-pointer)
+list(APPEND SANITIZER_COMMON_CFLAGS -fno-optimize-sibling-calls)
+
 append_list_if(COMPILER_RT_HAS_FUNWIND_TABLES_FLAG -funwind-tables SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS)
 append_list_if(COMPILER_RT_HAS_FNO_SANITIZE_SAFE_STACK_FLAG -fno-sanitize=safe-stack SANITIZER_COMMON_CFLAGS)
@@ -449,7 +454,7 @@ if (NOT MSVC)
   if(COMPILER_RT_DEBUG)
     list(APPEND SANITIZER_COMMON_CFLAGS -O1)
   else()
-    list(APPEND SANITIZER_COMMON_CFLAGS -O2)
+    list(APPEND SANITIZER_COMMON_CFLAGS -O1)
   endif()
 endif()