Emit unwinding code for textual LLVM and assembly output on Linux (#2163)

packages/compiler/src/index.ts

@@ -809,6 +809,9 @@ async function prepareExecutableInput(
         pointerBits: buildPlatform === "wasi" ? 32 : 64,
         wasi: buildPlatform === "wasi",
         runtimeAbiMarker: outputKind === "obj",
+        // Textual output shows the code an executable gets; objects keep
+        // the pending flag, since their link may not add an unwinder.
+        unwindAbi: buildPlatform === "linux" && outputKind !== "obj",
         objectAudit: opts.sanitize === true,
         lowRegion: lowRegionTarget(buildPlatform, opts.sanitize === true),
         ...(opts.sanitize === true ? { wasmBoundsChecks: true } : {}),

packages/compiler/src/native/prepare.ts

@@ -408,7 +408,11 @@ export function prepareNativeExecutable(
           pointerBits: toolchain.target.pointerBits,
           wasi: toolchain.target.platform === "wasi",
           runtimeAbiMarker: outputKind === "obj" || outputKind === "exe",
-          unwindAbi: outputKind === "exe" && toolchain.target.platform === "linux",
+          // As for the Node-hosted build: executables and their textual
+          // LLVM and assembly, not objects.
+          unwindAbi:
+            (outputKind === "exe" || outputKind === "llvm" || outputKind === "asm") &&
+            toolchain.target.platform === "linux",
           objectAudit: options.sanitize === true,
           lowRegion: lowRegionTarget(toolchain.target.platform, options.sanitize === true),
           functionWorkers: emitWorkers(),