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Patch: Fix bug in combine

This is really Ian Lance Taylor's patch; tested on x86 darwin. The testcase is
along the lines suggested by Jim Wilson, and does demonstrate the
problem on x86 Darwin; haven't tried Linux, but it should work there.
While I'm at it this enables 20030711-1.c on Darwin (it needed a little
hack to outwit header file differences). OK?

2005-08-26 Ian Lance Taylor <ian@airs.com>

* combine.c (make_extraction): Avoid reference outside object.

2005-08-26 Dale Johannesen <dalej@apple.com>

* gcc.dg/20030711-1.c: Modify to work on Darwin.
* gcc.dg/20050826-1.c: New.

Attachment: diffsc.txt
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Attachment: 20050826-1.c
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