File: cfi-unrelated-cast.cpp

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb11u2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,634,820 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (37 lines) | stat: -rw-r--r-- 899 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
// STL allocators should not have unrelated-cast tests applied
// RUN: %clang_cc1 -flto -triple x86_64-unknown-linux -fvisibility=hidden -fsanitize=cfi-unrelated-cast -emit-llvm -o - %s | FileCheck %s

#include <stddef.h>

template<class T>
class myalloc {
 public:
  // CHECK: define{{.*}}allocateE{{.}}
  // CHECK-NOT: llvm.type.test
  T *allocate(size_t sz) {
    return (T*)::operator new(sz);
  }

  // CHECK: define{{.*}}allocateE{{.}}PKv
  // CHECK-NOT: llvm.type.test
  T *allocate(size_t sz, const void *ptr) {
    return (T*)::operator new(sz);
  }

  // CHECK: define{{.*}}differentName
  // CHECK: llvm.type.test
  T *differentName(size_t sz, const void *ptr) {
    return (T*)::operator new(sz);
  }
};

class C1 {
  virtual void f() {}
};

C1 *f1() {
  myalloc<C1> allocator;
  (void)allocator.allocate(16);
  (void)allocator.allocate(16, 0);
  (void)allocator.differentName(16, 0);
}