nickdesaulniers added inline comments.

================
Comment at: clang/test/CodeGen/attr-counted-by.c:2
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py 
UTC_ARGS: --version 3
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -O2 -Wall 
-fsanitize=array-bounds,object-size,local-bounds -fstrict-flex-arrays=3 
-emit-llvm -o - %s | FileCheck %s
+
----------------
void wrote:
> nickdesaulniers wrote:
> > Can you add another run line without the `-fsanitize` flags set, and use 2 
> > different `--check-prefixes` for the two RUN lines?  I'd be curious to see 
> > the differences in codegen between those set or not.  I assume this 
> > attribute should affect codegen even with all of those disabled (maybe 
> > trapping instead of libcalling into ubsan runtime).  I think 
> > update_cc_test_checks should be able to handle that.
> Done.
I guess that's what I was curious about; how come the attribute doesn't affect 
codegen unless the sanitizers are enabled?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D148381/new/

https://reviews.llvm.org/D148381

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