Author: Fangrui Song Date: 2023-05-22T10:40:04-07:00 New Revision: 39ba913d13ab15c76cb6b5aa066fa111ddfe944b
URL: https://github.com/llvm/llvm-project/commit/39ba913d13ab15c76cb6b5aa066fa111ddfe944b DIFF: https://github.com/llvm/llvm-project/commit/39ba913d13ab15c76cb6b5aa066fa111ddfe944b.diff LOG: [Driver] -fsanitize=function: unsupport wasm after D148573 D148573 made x86-specific -fsanitize=function available to all targets, but wasm doesn't allow placing data words before the function label, so unsupport wasm. Added: Modified: clang/lib/Driver/ToolChains/WebAssembly.cpp clang/test/Driver/wasm-toolchain.c Removed: ################################################################################ diff --git a/clang/lib/Driver/ToolChains/WebAssembly.cpp b/clang/lib/Driver/ToolChains/WebAssembly.cpp index a1c4cd9ef9c79..016b70b1c2ede 100644 --- a/clang/lib/Driver/ToolChains/WebAssembly.cpp +++ b/clang/lib/Driver/ToolChains/WebAssembly.cpp @@ -459,6 +459,9 @@ SanitizerMask WebAssembly::getSupportedSanitizers() const { if (getTriple().isOSEmscripten()) { Res |= SanitizerKind::Vptr | SanitizerKind::Leak | SanitizerKind::Address; } + // -fsanitize=function places two words before the function label, which are + // -unsupported. + Res &= ~SanitizerKind::Function; return Res; } diff --git a/clang/test/Driver/wasm-toolchain.c b/clang/test/Driver/wasm-toolchain.c index f391b2802308d..bfe696d7846e7 100644 --- a/clang/test/Driver/wasm-toolchain.c +++ b/clang/test/Driver/wasm-toolchain.c @@ -146,6 +146,9 @@ // CHECK-ASAN-EMSCRIPTEN: "-fsanitize=address" // CHECK-ASAN-EMSCRIPTEN: "-fsanitize-address-globals-dead-stripping" +// RUN: %clang -### %s -fsanitize=function --target=wasm32-unknown-emscripten 2>&1 | FileCheck --check-prefix=FUNCTION %s +// FUNCTION: error: unsupported option '-fsanitize=function' for target 'wasm32-unknown-emscripten' + // Basic exec-model tests. // RUN: %clang -### %s --target=wasm32-unknown-unknown --sysroot=%s/no-sysroot-there -mexec-model=command 2>&1 \ _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
