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[pach]: Fix for PR/41799

Hi,


2009-10-26 ?Kai Tietz <kai.tietz@onevision.com>

PR/41799
* config/i386/mingw32.h (CHECK_EXECUTE_STACK_ENABLED): New macro.
* config/i386/mingw.opt: Add fset-stack-executable.
* config/i386/i386.c (ix86_trampoline_init): Make call to
emit_library_call conditional, if CHECK_EXECUTE_STACK_ENABLED is
defined and its value is not zero.
* doc/invoke.texi: Add documentation for new option.

This patch is tested for i686-pc-mingw32 and for x86_64-pc-mingw32.
I'll apply this patch tomorrow if there aren't any objections.

Cheers,
Kai

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