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

[Ural Tunaboyu]

Ubuntu 24.10 (Oracular Oriole) has reached end of life, so this bug will
not be fixed for that specific release.

** Changed in: gcc-13 (Ubuntu Oracular)
       Status: New => Won't Fix

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

Status in gcc-13 package in Ubuntu:
  Confirmed
Status in gcc-13 source package in Noble:
  New
Status in gcc-13 source package in Oracular:
  Won't Fix
Status in gcc-13 source package in Plucky:
  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

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