[binutils-gdb] Adjust gdb.base/exitsignal.exp for MinGW, trigger fault

[Pedro Alves]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2bbd3cb2289792e8093eec3594b96795df0fc1d4

commit 2bbd3cb2289792e8093eec3594b96795df0fc1d4
Author: Pedro Alves <pedro@palves.net>
Date:   Sat May 23 03:08:31 2026 +0100

    Adjust gdb.base/exitsignal.exp for MinGW, trigger fault
    
    gdb.base/segv.c uses raise(SIGSEGV) to generate a SIGSEGV.  On native
    Windows that does not generate an EXCEPTION_ACCESS_VIOLATION; raise is
    a pure userspace construct: it dispatches to the registered SIGSEGV
    handler if there is one, otherwise calls abort.  GDB therefore never
    sees an exception to intercept.  E.g.:
    
     ...
     continue
     Continuing.
     [Thread 1908.0x3308 (id 2) exited with code 3]
     [Inferior 1 (process 1908) exited with code 03]
     (gdb) FAIL: gdb.base/exitsignal.exp: trigger SIGSEGV (the program exited)
     continue
     The program is not being run.
     ...
    
    Replace the raise with a real null dereference so the kernel actually
    raises an access violation.
    
    Note: I confirmed no other tests use segv.c.  segv.c and normal.c are
    both "owned" by gdb.base/exitsignal.exp.
    
    Change-Id: Ib54d9e6998cf9bfc18dcb5e76d31a9deb0458da4

Diff:
---
 gdb/testsuite/gdb.base/segv.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/gdb/testsuite/gdb.base/segv.c b/gdb/testsuite/gdb.base/segv.c
index a3db6d292db..fd43d95e9b2 100644
--- a/gdb/testsuite/gdb.base/segv.c
+++ b/gdb/testsuite/gdb.base/segv.c
@@ -17,13 +17,11 @@
 
 /* This test can be used just to generate a SIGSEGV.  */
 
-#include <signal.h>
-
 int
 main (int argc, char *argv[])
 {
   /* Generating a SIGSEGV.  */
-  raise (SIGSEGV);
+  *(volatile int *) 0;
 
   return 0;
 }