File: lifetime-asan.c

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (21 lines) | stat: -rw-r--r-- 821 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 %s | FileCheck %s -check-prefix=CHECK-O0
// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
// RUN:     -fsanitize=address -fsanitize-address-use-after-scope %s | \
// RUN:     FileCheck %s -check-prefix=CHECK-ASAN-USE-AFTER-SCOPE

extern int bar(char *A, int n);

// CHECK-O0-NOT: @llvm.lifetime.start
int foo(int n) {
  if (n) {
    // CHECK-ASAN-USE-AFTER-SCOPE: @llvm.lifetime.start.p0i8(i64 10, i8* {{.*}})
    char A[10];
    return bar(A, 1);
    // CHECK-ASAN-USE-AFTER-SCOPE: @llvm.lifetime.end.p0i8(i64 10, i8* {{.*}})
  } else {
    // CHECK-ASAN-USE-AFTER-SCOPE: @llvm.lifetime.start.p0i8(i64 20, i8* {{.*}})
    char A[20];
    return bar(A, 2);
    // CHECK-ASAN-USE-AFTER-SCOPE: @llvm.lifetime.end.p0i8(i64 20, i8* {{.*}})
  }
}