[PATCH] [BZ #18433] Check file access/existence before forking.

Andreas Schwab schwab@linux-m68k.org
Sat Sep 19 06:39:00 GMT 2015


Rich Felker <dalias@libc.org> writes:

> Yes, I suppose that's a good way to model it. But the returns_twice
> attribute does not specify under what conditions the function returns
> again, so unless gcc has vfork-specific knowledge attached to the
> specific name, I suppose it must just assume everything stays live.

GCC doesn't treat vfork any different from setjmp, or any other function
marked returns_twice, see calls.c:special_function_p.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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