forked from OSchip/llvm-project
108 lines
4.2 KiB
C++
108 lines
4.2 KiB
C++
// RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair
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// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1:halt_on_error=0 %run %t 2>&1 | FileCheck %s
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#include <assert.h>
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#include <stdlib.h>
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int foo(char *p, char *q) {
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return p > q;
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}
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char global1[100] = {}, global2[100] = {};
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char __attribute__((used)) smallest_global[5] = {};
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char small_global[7] = {};
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char __attribute__((used)) little_global[10] = {};
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char __attribute__((used)) medium_global[4000] = {};
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char large_global[5000] = {};
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char __attribute__((used)) largest_global[6000] = {};
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int main() {
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// Heap allocated memory.
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char *heap1 = (char *)malloc(42);
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char *heap2 = (char *)malloc(42);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(heap1, heap2);
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free(heap1);
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free(heap2);
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heap1 = (char *)malloc(1024);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(heap1, heap1 + 1025);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(heap1 + 1024, heap1 + 1025);
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free(heap1);
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heap1 = (char *)malloc(4096);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(heap1, heap1 + 4097);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(heap1, 0);
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// Global variables.
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(&global1[0], &global2[10]);
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char *p = &small_global[0];
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foo(p, p); // OK
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foo(p, p + 7); // OK
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p, p + 8);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p - 1, p);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p, p - 1);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p - 1, p + 8);
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p = &large_global[0];
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p - 1, p);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p, p - 1);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p, &global1[0]);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p, &small_global[0]);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(p, 0);
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// Stack variables.
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char stack1, stack2;
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(&stack1, &stack2);
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// Mixtures.
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(heap1, &stack1);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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foo(heap1, &global1[0]);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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foo(&stack1, &global1[0]);
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// CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
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// CHECK: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-compare-errors.cc:[[@LINE+1]]
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foo(&stack1, 0);
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free(heap1);
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return 0;
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}
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