File: lifetime-asan.c

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; 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* {{.*}})
  }
}