[Bug c/86287] AddressSanitizer: heap-use-after-free on bootstrap with -O3

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86287

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Created attachment 44314
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44314&action=edit
C source code

The attached C code, when compiled with flag -O3, on a recent asan
version of trunk seems to cause the problem.