Backport stack trace panic fix to 0.40

Cargo.toml

@@ -45,6 +45,7 @@ rustix = { version = "0.35.6", features = ["mm", "param"] }
 # depend again on wasmtime to activate its default features for tests
 wasmtime = { path = "crates/wasmtime", version = "0.40.0", features = ['component-model'] }
 env_logger = "0.9.0"
+log = "0.4.8"
 filecheck = "0.5.0"
 tempfile = "3.1.0"
 test-programs = { path = "crates/test-programs" }

RELEASES.md

@@ -1,5 +1,17 @@
 --------------------------------------------------------------------------------
 
+## 0.40.1
+
+Released 2022-08-31.
+
+### Fixed
+
+* Fixed a potential panic when capturing a Wasm stack trace if there were
+  multiple Wasm activations on the stack from two different
+  stores. [#4779](https://github.com/bytecodealliance/wasmtime/pull/4779/)
+
+--------------------------------------------------------------------------------
+
 ## 0.40.0
 
 Released 2022-08-20.

crates/runtime/src/table.rs

@@ -103,7 +103,7 @@ impl TableElement {
     /// The same warnings as for `into_table_values()` apply.
     pub(crate) unsafe fn into_ref_asserting_initialized(self) -> usize {
         match self {
-            Self::FuncRef(e) => (e as usize),
+            Self::FuncRef(e) => e as usize,
             Self::ExternRef(e) => e.map_or(0, |e| e.into_raw() as usize),
             Self::UninitFunc => panic!("Uninitialized table element value outside of table slot"),
         }