Re: Emacs 23.1.96 (git HEAD) crashing at startup.

[Elias Pipping]

On Sun, May 2, 2010 at 8:46 PM, Chong Yidong <address@hidden> wrote:
> *** configure.in        2010-04-20 01:29:37 +0000
> --- configure.in        2010-05-02 18:27:15 +0000
> + ## GCC 4.5 has a bug that makes Emacs crash.  See etc/PROBLEMS.
> + if test x"`gcc --version 2> /dev/null | grep ' 4.5.0'`" != x; then
> +     if test x"`echo $CFLAGS | grep O2`" != x; then
> +        AC_MSG_ERROR([GCC 4.5.0 is buggy; can't compile Emacs with -O2'.])
> +     fi
> + fi
> +

Could you make the check and the error message a bit more precise? For
example, CFLAGS="-O2 -fno-optimize-sibling-calls" should get through
(CFLAGS="-O1 -foptimize-sibling-calls" should not, but that can
probably be ignored). It'd also be nice if either the error message or
the comments in configure.in referred to this bug.


Kind regards,

Elias