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43 lines
727 B
43 lines
727 B
4 months ago
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// 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 %run %t
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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 global[8192] = {};
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char small_global[7] = {};
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int main() {
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// Heap allocated memory.
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char *p = (char *)malloc(42);
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int r = foo(p, NULL);
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free(p);
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p = (char *)malloc(1024);
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foo(NULL, p);
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free(p);
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p = (char *)malloc(4096);
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foo(p, NULL);
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free(p);
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// Global variable.
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foo(&global[0], NULL);
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foo(&global[1000], NULL);
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p = &small_global[0];
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foo(p, NULL);
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// Stack variable.
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char stack[10000];
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foo(&stack[0], NULL);
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foo(NULL, &stack[9000]);
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return 0;
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}
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