Re: Fix memleak in getdelim.m4

[Bruno Haible]

Paul Eggert wrote:
> > -      if (memmem (haystack, 3, NULL, 0) != haystack)
> > +      if (memmem (haystack, 3, (const char *) 1, 0) != haystack)
> 
> This has undefined behavior in general, no?

No. memmem is not supposed to access more than NEEDLELEN bytes at NEEDLE.

> How about using '""' instead of '(const char *) 1'?

That would defeat the purpose of the test, which is to test for the glibc 2.0
bug [1].

Bruno

[1] http://man7.org/linux/man-pages/man3/memmem.3.html