45 lines · cpp
1// RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair2 3// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 %run %t k 2>&1 | FileCheck %s -check-prefix=OK -allow-empty4// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 not %run %t g 2>&1 | FileCheck %s -check-prefix=CMP -check-prefix=ALL-ERRORS5// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 not %run %t s 2>&1 | FileCheck %s -check-prefix=SUB -check-prefix=ALL-ERRORS6// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 not %run %t f 2>&1 | FileCheck %s -check-prefix=FREE -check-prefix=ALL-ERRORS7// XFAIL: msvc8#include <assert.h>9#include <stdlib.h>10 11int f(char c, char *p, char *q) {12 // ALL-ERRORS: ERROR: AddressSanitizer: invalid-pointer-pair13 // [[PTR1:0x[0-9a-f]+]] [[PTR2:0x[0-9a-f]+]]14 switch (c) {15 case 'g':16 // CMP: #{{[0-9]+ .*}} in f({{char, *char *\*, *char *\*}}) {{.*}}invalid-pointer-pairs.cpp:[[@LINE+1]]17 return p > q;18 case 's':19 // SUB: #{{[0-9]+ .*}} in f({{char, *char *\*, *char *\*}}) {{.*}}invalid-pointer-pairs.cpp:[[@LINE+1]]20 return p - q;21 case 'k': {22 // OK-NOT: ERROR23 char *p2 = p + 20;24 return p > p2;25 }26 case 'f': {27 char *p3 = p + 20;28 free(p);29 // FREE: #{{[0-9]+ .*}} in f({{char, *char *\*, *char *\*}}) {{.*}}invalid-pointer-pairs.cpp:[[@LINE+2]]30 // FREE: freed by thread31 return p < p3;32 }33 }34 assert(0);35}36 37int main(int argc, char **argv) {38 char *p = (char *)malloc(42);39 char *q = (char *)malloc(42);40 assert(argc >= 2);41 f(argv[1][0], p, q);42 free(p);43 free(q);44}45