From 14cbb4b78d532532f611d5653f169319bdf50b75 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alexander=20Thei=C3=9Fen?= Date: Mon, 30 Aug 2021 11:49:05 +0200 Subject: [PATCH] Add regression test for a spurious import --- src/test/run-make/wasm-spurious-import/Makefile | 7 +++++++ src/test/run-make/wasm-spurious-import/main.rs | 14 ++++++++++++++ src/test/run-make/wasm-spurious-import/verify.js | 9 +++++++++ 3 files changed, 30 insertions(+) create mode 100644 src/test/run-make/wasm-spurious-import/Makefile create mode 100644 src/test/run-make/wasm-spurious-import/main.rs create mode 100644 src/test/run-make/wasm-spurious-import/verify.js diff --git a/src/test/run-make/wasm-spurious-import/Makefile b/src/test/run-make/wasm-spurious-import/Makefile new file mode 100644 index 0000000000000..1bb59dc1bfa41 --- /dev/null +++ b/src/test/run-make/wasm-spurious-import/Makefile @@ -0,0 +1,7 @@ +-include ../../run-make-fulldeps/tools.mk + +# only-wasm32-bare + +all: + $(RUSTC) main.rs -C overflow-checks=yes -C panic=abort -C lto -C opt-level=z --target wasm32-unknown-unknown + $(NODE) verify.js $(TMPDIR)/main.wasm diff --git a/src/test/run-make/wasm-spurious-import/main.rs b/src/test/run-make/wasm-spurious-import/main.rs new file mode 100644 index 0000000000000..fcbead5e28bd2 --- /dev/null +++ b/src/test/run-make/wasm-spurious-import/main.rs @@ -0,0 +1,14 @@ +#![crate_type = "cdylib"] +#![no_std] + +#[panic_handler] +fn my_panic(_info: &core::panic::PanicInfo) -> ! { + loop {} +} + +#[no_mangle] +pub fn multer(a: i128, b: i128) -> i128 { + // Trigger usage of the __multi3 compiler intrinsic which then leads to an imported + // panic function in case of a bug. We verify that no imports exist in our verifier. + a * b +} diff --git a/src/test/run-make/wasm-spurious-import/verify.js b/src/test/run-make/wasm-spurious-import/verify.js new file mode 100644 index 0000000000000..d3b2101b6623c --- /dev/null +++ b/src/test/run-make/wasm-spurious-import/verify.js @@ -0,0 +1,9 @@ +const fs = require('fs'); +const process = require('process'); +const assert = require('assert'); +const buffer = fs.readFileSync(process.argv[2]); + +let m = new WebAssembly.Module(buffer); +let imports = WebAssembly.Module.imports(m); +console.log('imports', imports); +assert.strictEqual(imports.length, 0);