From 614c9322d50052c76fb3e6e1be7536a972ff0902 Mon Sep 17 00:00:00 2001 From: phanium <91544758+phanen@users.noreply.github.com> Date: Tue, 25 Feb 2025 05:34:49 +0800 Subject: fix(lua): SIGSEGV in luv callback with error(nil) #32595 Problem: luv callback `vim.uv.new_timer():start(0, 0, function() error() end)` causes SIGSEGV, since `xstrdup` gets NULL from `lua_tostring`. Similar to: https://github.com/neovim/neovim/commit/a5b1b83a2693ffa7a5a0a22b3693d36ea60051be Solution: Check NULL before `xstrdup`. --- src/nvim/lua/executor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src') diff --git a/src/nvim/lua/executor.c b/src/nvim/lua/executor.c index 71c5cd4585..17009446e4 100644 --- a/src/nvim/lua/executor.c +++ b/src/nvim/lua/executor.c @@ -221,7 +221,7 @@ static int nlua_fast_cfpcall(lua_State *lstate, int nargs, int nresult, int flag const char *error = lua_tostring(lstate, -1); multiqueue_put(main_loop.events, nlua_luv_error_event, - xstrdup(error), (void *)(intptr_t)kCallback); + error != NULL ? xstrdup(error) : NULL, (void *)(intptr_t)kCallback); lua_pop(lstate, 1); // error message retval = -status; } else { // LUA_OK -- cgit