From b287470b53ef074332c4b0056cfc05486a85c4a7 Mon Sep 17 00:00:00 2001 From: Christian Nieves Date: Fri, 20 Sep 2024 11:33:40 -0500 Subject: [wasm2c] Fix alternate stack deallocation (#2466) This makes `wasm_rt_init()` properly reentrant. By setting `g_alt_stack = NULL`, we allow execution to continue beyond [wasm-rt-impl.c L171 ](https://github.com/WebAssembly/wabt/blob/main/wasm2c/wasm-rt-impl.c#L171) in `os_allocate_and_install_altstack`. Applies to debug builds only due to `assert`. --- wasm2c/wasm-rt-impl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/wasm2c/wasm-rt-impl.c b/wasm2c/wasm-rt-impl.c index 36bb9690..d02a70f1 100644 --- a/wasm2c/wasm-rt-impl.c +++ b/wasm2c/wasm-rt-impl.c @@ -224,6 +224,7 @@ static void os_disable_and_deallocate_altstack(void) { } assert(!os_has_altstack_installed()); free(g_alt_stack); + g_alt_stack = NULL; } #endif -- cgit v1.2.3