Rémi Bernon : winedbg: Don't dereference possibly NULL thread pointer.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 6eff0342ad6f8c262112e6aeb083bb386d37cf04
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=6eff0342ad6f8c262112e6aeb...

Author: Rémi Bernon <rbernon(a)codeweavers.com>
Date:   Tue Mar  9 22:54:55 2021 +0100

winedbg: Don't dereference possibly NULL thread pointer.

Signed-off-by: Rémi Bernon <rbernon(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 programs/winedbg/gdbproxy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/programs/winedbg/gdbproxy.c b/programs/winedbg/gdbproxy.c
index 3c1b3e85df8..a19b5950ccc 100644
--- a/programs/winedbg/gdbproxy.c
+++ b/programs/winedbg/gdbproxy.c
@@ -112,11 +112,11 @@ struct gdb_context
 static void gdbctx_delete_xpoint(struct gdb_context *gdbctx, struct dbg_thread *thread,
                                  dbg_ctx_t *ctx, struct gdb_xpoint *x)
 {
-    struct dbg_process *process = thread->process;
+    struct dbg_process *process = gdbctx->process;
     struct backend_cpu *cpu = process->be_cpu;
 
     if (!cpu->remove_Xpoint(process->handle, process->process_io, ctx, x->type, x->addr, x->value, x->size))
-        ERR("%04x:%04x: Couldn't remove breakpoint at:%p/%x type:%d\n", process->pid, thread->tid, x->addr, x->size, x->type);
+        ERR("%04x:%04x: Couldn't remove breakpoint at:%p/%x type:%d\n", process->pid, thread ? thread->tid : ~0, x->addr, x->size, x->type);
 
     list_remove(&x->entry);
     HeapFree(GetProcessHeap(), 0, x);