On Thu, Mar 03, 2016 at 12:31:52PM +0100, Eric Botcazou wrote:
> > Anyway, looking at pro_and_epilogue dumps, with additional
> > -fstack-protector-strong we decrease sp only by 4176, while without it by
> > 8224 (on x86_64; the testcase fails on all targets I've tried so far
> > ({x86_64,i686,powerpc64{,le},s390{,x},aarch64,armv7hl}-linux).
>
> Yeah, the threshold is around 4KB, feel free to add a few more HUNDREDs.
I've mislooked, with -fstack-protector-strong it just has 48 bytes, and
adding many more HUNDREDs doesn't change anything.
This works though, ok for trunk?
2016-03-03 Jakub Jelinek <ja...@redhat.com>
PR ada/70017
* gcc.dg/pr70017.c (foo): Store 0 to first element of each array.
--- gcc/testsuite/gcc.dg/pr70017.c.jj 2016-03-02 07:39:10.000000000 +0100
+++ gcc/testsuite/gcc.dg/pr70017.c 2016-03-03 19:22:02.098801850 +0100
@@ -13,4 +13,8 @@ void foo(void)
{
HUNDRED(a)
HUNDRED(b)
+#undef ONE
+#define ONE(s) a##s[0] = 0;
+ HUNDRED(a)
+ HUNDRED(b)
} /* { dg-warning "frame size too large for reliable stack checking" } */
Jakub
