[Bug sanitizer/81619] pairs of mmap/munmap do not reset asan's user-poisoning flags, leading to invalid error reports

[dvilleneuve at kronos dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81619

--- Comment #1 from Daniel Villeneuve <dvilleneuve at kronos dot com> ---
Created attachment 41864
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41864&action=edit
Makefile to build program