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llvm-project/clang/test/CodeGen/asan-destructor-kind.cpp

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[Clang][ASan] Introduce `-fsanitize-address-destructor-kind=` driver & frontend option. The new `-fsanitize-address-destructor-kind=` option allows control over how module destructors are emitted by ASan. The new option is consumed by both the driver and the frontend and is propagated into codegen options by the frontend. Both the legacy and new pass manager code have been updated to consume the new option from the codegen options. It would be nice if the new utility functions (`AsanDtorKindToString` and `AsanDtorKindFromString`) could live in LLVM instead of Clang so they could be consumed by other language frontends. Unfortunately that doesn't work because the clang driver doesn't link against the LLVM instrumentation library. rdar://71609176 Differential Revision: https://reviews.llvm.org/D96572
2021-02-10 15:02:50 +08:00
// Frontend rejects invalid option
// RUN: not %clang_cc1 -fsanitize=address \
// RUN: -fsanitize-address-destructor-kind=bad_arg -emit-llvm -o - \
// RUN: -triple x86_64-apple-macosx10.15 %s 2>&1 | \
// RUN: FileCheck %s --check-prefixes=CHECK-BAD-ARG
// CHECK-BAD-ARG: unsupported argument 'bad_arg' to option 'fsanitize-address-destructor-kind='
// Default is global dtor
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple x86_64-apple-macosx10.15 \
// RUN: -fno-legacy-pass-manager %s \
// RUN: | FileCheck %s --check-prefixes=CHECK-GLOBAL-DTOR
//
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple x86_64-apple-macosx10.15 \
// RUN: -flegacy-pass-manager %s \
// RUN: | FileCheck %s --check-prefixes=CHECK-GLOBAL-DTOR
// Explictly ask for global dtor
// RUN: %clang_cc1 -fsanitize=address \
// RUN: -fsanitize-address-destructor-kind=global -emit-llvm -o - \
// RUN: -triple x86_64-apple-macosx10.15 -fno-legacy-pass-manager %s | \
// RUN: FileCheck %s --check-prefixes=CHECK-GLOBAL-DTOR
//
// RUN: %clang_cc1 -fsanitize=address \
// RUN: -fsanitize-address-destructor-kind=global -emit-llvm -o - \
// RUN: -triple x86_64-apple-macosx10.15 -flegacy-pass-manager %s | \
// RUN: FileCheck %s --check-prefixes=CHECK-GLOBAL-DTOR
// CHECK-GLOBAL-DTOR: llvm.global_dtor{{.+}}asan.module_dtor
// CHECK-GLOBAL-DTOR: define internal void @asan.module_dtor
// Explictly ask for no dtors
// RUN: %clang_cc1 -fsanitize=address \
// RUN: -fsanitize-address-destructor-kind=none -emit-llvm -o - \
// RUN: -triple x86_64-apple-macosx10.15 -fno-legacy-pass-manager %s | \
// RUN: FileCheck %s --check-prefixes=CHECK-NONE-DTOR
//
// RUN: %clang_cc1 -fsanitize=address \
// RUN: -fsanitize-address-destructor-kind=none -emit-llvm -o - \
// RUN: -triple x86_64-apple-macosx10.15 -flegacy-pass-manager %s | \
// RUN: FileCheck %s --check-prefixes=CHECK-NONE-DTOR
int global;
int main() {
return global;
}
// CHECK-NONE-DTOR-NOT: llvm.global_dtor{{.+}}asan.module_dtor
// CHECK-NONE-DTOR-NOT: define internal void @asan.module_dtor