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bug#10092: 24.0.91; `C-g' makes Emacs to crash

From: Juanma Barranquero
Subject: bug#10092: 24.0.91; `C-g' makes Emacs to crash
Date: Fri, 25 Nov 2011 00:51:04 +0100

> * gcc version 4.6.1
> * mingw-get version 0.4-alpha-1

When building with optimizations, are you passing the
-fno-omit-frame-pointer flag to GCC?

There was a discussion in emacs-devel about one month ago. Eli said:

   This thread:


   suggests that it probably is.  IIUC, there's an issue with setjmp in
   the MS runtime not working when -fomit-frame-pointer is used, and the
   MinGW GCC 4.6.1 turns on -fomit-frame-pointer by default when
   optimizing.  Since Emacs uses setjmp/longjmp _a_lot_, and in
   particular C-g throws to the top level via this mechanism, it seems
   like we have a smoking gun.

   Perhaps rebuild Emacs with -fno-omit-frame-pointer, and see if that


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