------- Comment #11 from ubizjak at gmail dot com 2007-09-20 11:58 -------
I hope that following testcase can be of some use to somebody...
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void __attribute__((noinline))
inflate_fast (unsigned char *from, unsigned char *out, unsigned int len)
{
while (len > 2)
{
*++(out) = *++(from);
*++(out) = *++(from);
*++(out) = *++(from);
len -= 3;
}
return;
}
int main()
{
unsigned int len = 13;
unsigned char x[13] = "Hello there! ...Hello there! ...Hello there! ...";
unsigned char y[13] = " ";
inflate_fast (x, y, len);
printf ("%s\n", y);
return 0;
}
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This testcase produces movdqa with 1byte offset, but I'm not able to trigger
segfault with it, although it produces asm code as in comment #18.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32893
