| 1 | // RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1 |
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| 2 | // RUN: FileCheck %s < %t.out |
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| 3 | #include <stdlib.h> |
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| 4 | #include <string.h> |
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| 5 | |
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| 6 | float P; |
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| 7 | long L; |
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| 8 | |
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| 9 | int main() { |
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| 10 | *(int *)&P = 5; |
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| 11 | // CHECK: ERROR: TypeSanitizer: type-aliasing-violation |
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| 12 | // CHECK: WRITE of size 4 at {{.*}} with type int accesses an existing object of type float |
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| 13 | // CHECK: {{#0 0x.* in main .*global.c:}}[[@LINE-3]] |
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| 14 | |
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| 15 | void *mem = malloc(size: sizeof(long)); |
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| 16 | *(int *)mem = 6; |
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| 17 | memcpy(dest: mem, src: &L, n: sizeof(L)); |
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| 18 | *(int *)mem = 8; |
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| 19 | // CHECK: ERROR: TypeSanitizer: type-aliasing-violation |
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| 20 | // CHECK: WRITE of size 4 at {{.*}} with type int accesses an existing object of type long |
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| 21 | // CHECK: {{#0 0x.* in main .*global.c:}}[[@LINE-3]] |
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| 22 | int r = *(((int *)mem) + 1); |
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| 23 | // CHECK: ERROR: TypeSanitizer: type-aliasing-violation |
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| 24 | // CHECK: READ of size 4 at {{.*}} with type int accesses part of an existing object of type long that starts at offset -4 |
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| 25 | // CHECK: {{#0 0x.* in main .*global.c:}}[[@LINE-3]] |
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| 26 | free(ptr: mem); |
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| 27 | |
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| 28 | return r; |
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| 29 | } |
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| 30 | |
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| 31 | // CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation |
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| 32 | |
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