* setjmp/Makefile (tests): Add jmpbug.
* setjmp/jmpbug.c: New file.
+Tue Mar 12 04:57:57 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
+
+ * setjmp/Makefile (tests): Add jmpbug.
+ * setjmp/jmpbug.c: New file.
+
Tue Mar 12 04:42:01 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>
* sysdeps/sparc/jmp_buf.h: Rewritten; use array of ints, not struct.
routines := setjmp sigjmp bsd-setjmp bsd-_setjmp \
longjmp __longjmp jmp-unwind
-tests := tst-setjmp
+tests := tst-setjmp jmpbug
include ../Rules
--- /dev/null
+/* setjmp vs alloca test case. Exercised bug on sparc. */
+
+#include <stdio.h>
+#include <setjmp.h>
+#include <alloca.h>
+
+void
+sub5 (jmp_buf buf)
+{
+ longjmp (buf, 1);
+}
+
+int
+main (void)
+{
+ jmp_buf buf;
+ char *foo;
+ int arr[100];
+
+ arr[77] = 76;
+ if (setjmp (buf))
+ {
+ printf ("made it ok; %d\n", arr[77]);
+ exit (0);
+ }
+
+ foo = (char *) alloca (128);
+ sub5 (buf);
+
+ /* NOTREACHED */
+ return 1;
+}
#include <sysdep.h>
+#define _ASM 1
#include <jmp_buf.h>
#define ENV(reg) [%g1 + (reg * 4)]
/* Define the machine-dependent type `jmp_buf'. SPARC version. */
-/* NOTE: The assembly code in __longjmp.S and setjmp.S knows the layout
- of this structure. You must hack the assembly code if you want to change
- the order of the members. */
+#if defined (__USE_MISC) || defined (_ASM)
+#define JB_SP 0
+#define JB_FP 1
+#define JB_PC 2
+#endif
-typedef struct
- {
- /* Return PC (register o7). */
- __ptr_t __pc;
+#ifndef _ASM
+typedef int __jmp_buf[3];
+#endif
- /* Saved FP. */
- __ptr_t __fp;
- } __jmp_buf[1];
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+ ((int) (address) < (jmpbuf)[JB_SP])
Cambridge, MA 02139, USA. */
#include <sysdep.h>
+
+#define _ASM 1
#include <jmp_buf.h>
ENTRY (__sigsetjmp)