Hi, gcc.target/i386/pr64291-1.c has 2 issues:
1. Stack variables, n and d, aren't initialized. 2. dnp[dn - 1] |= 1UL<<63; doesn't work with 32-bit long. I am checking this patch from https://gcc.gnu.org/bugzilla/attachment.cgi?id=34342 as an obvious fix. H.J. 2015-01-12 Marc Glisse <marc.gli...@inria.fr> PR testsuite/64427 * gcc.target/i386/pr64291-1.c: Limit to lp64 tarrget. Avoid undefined behavior. * gcc.target/i386/pr64291-2.c: Updated. diff --git a/gcc/testsuite/gcc.target/i386/pr64291-1.c b/gcc/testsuite/gcc.target/i386/pr64291-1.c index 85253c0..1d3a380 100644 --- a/gcc/testsuite/gcc.target/i386/pr64291-1.c +++ b/gcc/testsuite/gcc.target/i386/pr64291-1.c @@ -1,6 +1,6 @@ /* { dg-options "-O2" } */ /* { dg-additional-sources pr64291-2.c } */ -/* { dg-do run } */ +/* { dg-do run { target lp64 } } */ void f(void*,...); void g(void*,long,long); int nnn=0; @@ -12,6 +12,7 @@ typedef struct unsigned long *_mp_d; } __mpz_struct; typedef __mpz_struct mpz_t[1]; +void h(mpz_t); int main () { @@ -21,7 +22,7 @@ int main () long alloc, itch; f (n); - f (d); + h (d); qp = (unsigned long*)__builtin_alloca(4099*8) + 1; dnp = (unsigned long*)__builtin_alloca (2049*8); alloc = 1; diff --git a/gcc/testsuite/gcc.target/i386/pr64291-2.c b/gcc/testsuite/gcc.target/i386/pr64291-2.c index 2f3f929..7b7e88a 100644 --- a/gcc/testsuite/gcc.target/i386/pr64291-2.c +++ b/gcc/testsuite/gcc.target/i386/pr64291-2.c @@ -1,4 +1,14 @@ /* { dg-do compile } */ -extern void abort (void); +#include <assert.h> void f(void*p,...){} -void g(void*p,long a,long b){if (a!=8) abort();} +void g(void*p,long a,long b){assert(a==8);} +typedef struct +{ + int _mp_size; + unsigned long *_mp_d; +} __mpz_struct; +typedef __mpz_struct mpz_t[1]; +void h(mpz_t x) { + x->_mp_d=0; + x->_mp_size=0; +}
