+2004-11-23 Eric Botcazou <ebotcazou@libertysurf.fr>
+
+ * gcc.dg/setjmp-2.c: New test.
+
2004-11-22 James A. Morrison <phython@gcc.gnu.org>
* gcc.target/sparc/align.c, gcc.target/sparc/combined-2.c,
--- /dev/null
+/* PR middle-end/17813 */
+/* Origin: Tom Hughes <tom@compton.nu> */
+/* { dg-do run { target i?86-*-linux* x86_64-*-linux* } } */
+/* { dg-options "-O -fomit-frame-pointer -march=i386" { target i?86-*-linux* } } */
+/* { dg-options "-O -fomit-frame-pointer -m32 -march=i386" { target x86_64-*-linux* } } */
+
+#include <setjmp.h>
+#include <signal.h>
+#include <stdlib.h>
+
+static jmp_buf segv_jmpbuf;
+
+static void segv_handler(int seg)
+{
+ __builtin_longjmp(segv_jmpbuf, 1);
+}
+
+static int is_addressable(void *p, size_t size)
+{
+ volatile char * volatile cp = (volatile char *)p;
+ volatile int ret;
+ struct sigaction sa, origsa;
+ sigset_t mask;
+
+ sa.sa_handler = segv_handler;
+ sa.sa_flags = 0;
+ sigfillset(&sa.sa_mask);
+ sigaction(SIGSEGV, &sa, &origsa);
+ sigprocmask(SIG_SETMASK, NULL, &mask);
+
+ if (__builtin_setjmp(segv_jmpbuf) == 0) {
+ while(size--)
+ *cp++;
+ ret = 1;
+ } else
+ ret = 0;
+
+ sigaction(SIGSEGV, &origsa, NULL);
+ sigprocmask(SIG_SETMASK, &mask, NULL);
+
+ return ret;
+}
+
+int main(int argc, char **argv)
+{
+ is_addressable(0x0, 1);
+ return 0;
+}