clang/test/CodeGen/asan-globals-odr.cpp

   1 // RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple x86_64-linux %s | FileCheck %s --check-prefixes=CHECK,INDICATOR1,GLOB_ALIAS_INDICATOR,ALIAS1
   2 // RUN: %clang_cc1 -fsanitize=address -fno-sanitize-address-use-odr-indicator -emit-llvm -o - -triple x86_64-linux %s | FileCheck %s --check-prefixes=CHECK,INDICATOR0,GLOB_VAR,ALIAS0
   3 // RUN: %clang_cc1 -fsanitize=address -fno-sanitize-address-use-odr-indicator -fsanitize-address-use-odr-indicator -emit-llvm -o - -triple x86_64-linux %s | FileCheck %s --check-prefixes=CHECK,INDICATOR1,GLOB_ALIAS_INDICATOR,ALIAS1
   4 // RUN: %clang_cc1 -fsanitize=address -fsanitize-address-use-odr-indicator -fno-sanitize-address-use-odr-indicator -emit-llvm -o - -triple x86_64-linux %s | FileCheck %s --check-prefixes=CHECK,INDICATOR0,GLOB_VAR,ALIAS0
   5
   6 // No alias on Windows but indicators should work.
   7 // RUN: %clang_cc1 -fsanitize=address -fno-sanitize-address-use-odr-indicator -emit-llvm -o - -triple x86_64-windows-msvc %s | FileCheck %s --check-prefixes=CHECK,GLOB_VAR,ALIAS0
   8 // RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple x86_64-windows-msvc %s | FileCheck %s --check-prefixes=CHECK,INDICATOR1,GLOB_VAR_INDICATOR,ALIAS0
   9
  10 int global;
  11
  12 int main() {
  13   return global;
  14 }
  15
  16 // CHECK: [[VAR:@.*global.*]] ={{.*}} global { i32, [28 x i8] } zeroinitializer, align 32
  17
  18 // INDICATOR0-NOT: __odr_asan_gen
  19 // INDICATOR1: [[ODR:@.*__odr_asan_gen_.*global.*]] = global i8 0, align 1
  20
  21 // GLOB_VAR: @0 = internal global {{.*}} [[VAR]] to i64), {{.*}}, i64 0 }]
  22 // GLOB_VAR_INDICATOR: @0 = internal global {{.*}} [[VAR]] to i64), {{.*}}, i64 ptrtoint (ptr [[ODR]] to i64) }]
  23 // GLOB_ALIAS_INDICATOR: @0 = internal global {{.*}} @1 to i64), {{.*}}, i64 ptrtoint (ptr [[ODR]] to i64) }]
  24
  25 // ALIAS0-NOT: private alias
  26 // ALIAS1: @1 = private alias {{.*}} [[VAR]]
  27
  28 // CHECK: call void @__asan_register_globals(i64 ptrtoint (ptr @0 to i64), i64 1)
  29 // CHECK: call void @__asan_unregister_globals(i64 ptrtoint (ptr @0 to i64), i64 1)