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[commit] Ignore SEGVs from win32 IsBad* functions
- From: Christopher Faylor <cgf at gnu dot org>
- To: gdb-patches at sourceware dot org
- Date: Sun, 27 Mar 2005 00:20:52 -0500
- Subject: [commit] Ignore SEGVs from win32 IsBad* functions
There have been a number of complaints in the cygwin lists about
gdb's behavior with the win32 IsBad*Ptr calls.
This patch causes gdb to ignore notification of SEGV from within
those calls.
cgf
2005-03-27 Christopher Faylor <cgf@timesys.com>
* win32-nat.c (handle_exception): Treat win32 routines which check for
valid addresses as "special" and don't stop when a SEGV is detected.
(get_child_debug_event): Properly flag exception as unhandled.
Index: win32-nat.c
===================================================================
RCS file: /cvs/uberbaum/gdb/win32-nat.c,v
retrieving revision 1.109
diff -u -p -r1.109 win32-nat.c
--- win32-nat.c 21 Mar 2005 19:54:15 -0000 1.109
+++ win32-nat.c 27 Mar 2005 05:17:45 -0000
@@ -1077,6 +1077,14 @@ handle_exception (struct target_waitstat
case EXCEPTION_ACCESS_VIOLATION:
DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_ACCESS_VIOLATION");
ourstatus->value.sig = TARGET_SIGNAL_SEGV;
+ {
+ char *fn;
+ if (find_pc_partial_function ((CORE_ADDR) current_event.u.Exception
+ .ExceptionRecord.ExceptionAddress,
+ &fn, NULL, NULL)
+ && strncmp (fn, "KERNEL32!IsBad", strlen ("KERNEL32!IsBad")) == 0)
+ return 0;
+ }
break;
case STATUS_STACK_OVERFLOW:
DEBUG_EXCEPTION_SIMPLE ("STATUS_STACK_OVERFLOW");
@@ -1360,6 +1368,8 @@ get_child_debug_event (int pid, struct t
break;
if (handle_exception (ourstatus))
retval = current_event.dwThreadId;
+ else
+ continue_status = DBG_EXCEPTION_NOT_HANDLED;
break;
case OUTPUT_DEBUG_STRING_EVENT: /* message from the kernel */