[Bug 2112171] [NEW] ASan detect_stack_use_after_return=1 makes vector<bool> incredibly slow

[Daniel Bertalan]

Public bug reported:

When compiled with g++ 13.3.0-6ubuntu2~24.04 and Address Sanitizer, the
attached code runs 60x slower (10.5 s vs 170 ms) with stack-use-after-
return checking enabled.

$ g++-13 -fsanitize=address -fsanitize=undefined -g -O2 tle.cpp

It's fixed (https://gcc.gnu.org/cgit/gcc/commit/?id=aac7bb773f7d1c) in
the releases/gcc-13 branch and will be present in GCC 13.4.

Upstream bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120475

** Affects: gcc-13 (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "Reproducer source code"
   https://bugs.launchpad.net/bugs/2112171/+attachment/5881186/+files/tle.cpp

** Description changed:

  When compiled with g++ 13.3.0-6ubuntu2~24.04 and Address Sanitizer, the
  attached code runs 60x slower (10.5 s vs 170 ms) with stack-use-after-
- return checking disabled.
+ return checking enabled.
  
  $ g++-13 -fsanitize=address -fsanitize=undefined -g -O2 tle.cpp
  
  It's fixed (https://gcc.gnu.org/cgit/gcc/commit/?id=aac7bb773f7d1c) in
  the releases/gcc-13 branch and will be present in GCC 13.4.
  
  Upstream bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120475

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to gcc-13 in Ubuntu.
https://bugs.launchpad.net/bugs/2112171

Title:
  ASan detect_stack_use_after_return=1 makes vector<bool> incredibly
  slow

Status in gcc-13 package in Ubuntu:
  New

Bug description:
  When compiled with g++ 13.3.0-6ubuntu2~24.04 and Address Sanitizer,
  the attached code runs 60x slower (10.5 s vs 170 ms) with stack-use-
  after-return checking enabled.

  $ g++-13 -fsanitize=address -fsanitize=undefined -g -O2 tle.cpp

  It's fixed (https://gcc.gnu.org/cgit/gcc/commit/?id=aac7bb773f7d1c) in
  the releases/gcc-13 branch and will be present in GCC 13.4.

  Upstream bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120475

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gcc-13/+bug/2112171/+subscriptions