clang/test/CodeGen/lifetime-sanitizer.c

   1 // RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
   2 // RUN:     -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=CHECK-O0
   3 // RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
   4 // RUN:     -fsanitize=address -fsanitize-address-use-after-scope \
   5 // RUN:     -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=LIFETIME
   6 // RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
   7 // RUN:     -fsanitize=memory -Xclang -disable-llvm-passes %s | \
   8 // RUN:     FileCheck %s -check-prefix=LIFETIME
   9 // RUN: %clang -target aarch64-linux-gnu -S -emit-llvm -o - -O0 \
  10 // RUN:     -fsanitize=hwaddress -Xclang -disable-llvm-passes %s | \
  11 // RUN:     FileCheck %s -check-prefix=LIFETIME
  12
  13 extern int bar(char *A, int n);
  14
  15 // CHECK-O0-NOT: @llvm.lifetime.start
  16 int foo(int n) {
  17   if (n) {
  18     // LIFETIME: @llvm.lifetime.start.p0(i64 10, ptr {{.*}})
  19     char A[10];
  20     return bar(A, 1);
  21     // LIFETIME: @llvm.lifetime.end.p0(i64 10, ptr {{.*}})
  22   } else {
  23     // LIFETIME: @llvm.lifetime.start.p0(i64 20, ptr {{.*}})
  24     char A[20];
  25     return bar(A, 2);
  26     // LIFETIME: @llvm.lifetime.end.p0(i64 20, ptr {{.*}})
  27   }
  28 }