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llvm-project/clang/test/CodeGen/asan-static-odr.cpp

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[asan] Don't check ODR violations for particular types of globals Summary: private and internal: should not trigger ODR at all. unnamed_addr: current ODR checking approach fail and rereport false violation if a linker merges such globals linkonce_odr, weak_odr: could cause similar problems and they are already not instrumented for ELF. Reviewers: eugenis, kcc Subscribers: kubamracek, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D55621 llvm-svn: 349015
2018-12-13 17:47:39 +08:00
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple x86_64-linux %s | FileCheck %s --check-prefixes=CHECK,ALIAS1
// No alias on Windows but indicators should work.
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple x86_64-windows-msvc %s | FileCheck %s --check-prefixes=CHECK,ALIAS0
static int global;
int main() {
return global;
}
// CHECK-NOT: __odr_asan_gen
// CHECK-NOT: private alias
// CHECK: [[VAR:@.*global.*]] ={{.*}} global { i32, [60 x i8] } zeroinitializer, align 32
// CHECK: @0 = internal global {{.*}} [[VAR]] to i64), {{.*}}, i64 -1 }]
// CHECK: call void @__asan_register_globals(i64 ptrtoint ([1 x { i64, i64, i64, i64, i64, i64, i64, i64 }]* @0 to i64), i64 1)
// CHECK: call void @__asan_unregister_globals(i64 ptrtoint ([1 x { i64, i64, i64, i64, i64, i64, i64, i64 }]* @0 to i64), i64 1)