[Tarantool-patches] [PATCH] cppcheck: src/lua/fiber.c null pointer dereference

[Sergey Kaplun]

Found and fixed possible null pointer dereference with cppcheck:

[src/lua/fiber.c:245] -> [src/lua/fiber.c:217]: (warning) Either the condition 'if(func)' is redundant or there is possible null pointer dereference: func.
---

Branch: https://github.com/tarantool/tarantool/tree/skaplun/cppcheck-lua-fiber-possible-null-pointer-dereference

 src/lua/fiber.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lua/fiber.c b/src/lua/fiber.c
index 45bc03787..bb6212b24 100644
--- a/src/lua/fiber.c
+++ b/src/lua/fiber.c
@@ -214,7 +214,7 @@ fiber_backtrace_cb(int frameno, void *frameret, const char *func, size_t offset,
 {
 	struct lua_fiber_tb_ctx *tb_ctx = (struct lua_fiber_tb_ctx *)cb_ctx;
 	struct lua_State *L = tb_ctx->L;
-	if (strstr(func, "lj_BC_FUNCC") == func) {
+	if (func && strstr(func, "lj_BC_FUNCC") == func) {
 		/* We are in the LUA vm. */
 		lua_Debug ar;
 		while (tb_ctx->R && lua_getstack(tb_ctx->R, tb_ctx->lua_frame, &ar) > 0) {
-- 
2.28.0