[asan] Don't enable detect_stack_use_after_return on Windows

It's not clear how ready it's there.
llvm · Apr 23, 2022 · 72e00c4 · 72e00c4
1 parent ff25f69
commit 72e00c4
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diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
@@ -174,7 +174,7 @@ Non-comprehensive list of changes in this release
   - Remove anonymous tag locations.
   - Beautify dump format, add indent for nested struct and struct members.
 - Previously disabled sanitizer options now enabled by default:
-  - ASAN_OPTIONS=detect_stack_use_after_return=1.
+  - ASAN_OPTIONS=detect_stack_use_after_return=1 (except Windows).
   - MSAN_OPTIONS=poison_in_dtor=1.
 
 New Compiler Flags

diff --git a/compiler-rt/lib/asan/asan_flags.inc b/compiler-rt/lib/asan/asan_flags.inc
@@ -49,7 +49,7 @@ ASAN_FLAG(
     "to find more errors.")
 ASAN_FLAG(bool, replace_intrin, true,
           "If set, uses custom wrappers for memset/memcpy/memmove intrinsics.")
-ASAN_FLAG(bool, detect_stack_use_after_return, true,
+ASAN_FLAG(bool, detect_stack_use_after_return, !SANITIZER_WINDOWS,
           "Enables stack-use-after-return checking at run-time.")
 ASAN_FLAG(int, min_uar_stack_size_log, 16, // We can't do smaller anyway.
           "Minimum fake stack size log.")