[Bug bootstrap/98860] [11 Regression] boostrap failure on MinGW-w64 windows 10

[mikpelinux at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98860

--- Comment #31 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Created attachment 50158
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50158&action=edit
conftest.c (based configure's cross compilation test)

This runs Ok when compiled with "-O2 -g -gdwarf-4", but fails with Windows
error code 193 aka "Exec format error" when compiled with "-O2 -g -gdwarf-5".
The error is reproducible with a x86_64-w64-mingw32 cross (just transfer the
EXEs to Windows for execution).

Compiling with -S shows differences in several .debug sections.