| 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 | |
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| 4 | #include <stdio.h> |
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| 5 | |
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| 6 | typedef struct { |
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| 7 | int i1, i1b; |
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| 8 | } s1; |
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| 9 | typedef struct { |
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| 10 | int i2, i2b, i2c; |
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| 11 | } s2; |
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| 12 | |
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| 13 | void f(s1 *s1p, s2 *s2p) { |
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| 14 | s1p->i1 = 2; |
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| 15 | s2p->i2 = 3; |
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| 16 | // CHECK: ERROR: TypeSanitizer: type-aliasing-violation |
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| 17 | // CHECK: WRITE of size 4 at {{.*}} with type int (in <anonymous type> at offset 0) accesses an existing object of type int (in <anonymous type> at offset 0) |
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| 18 | // CHECK: {{#0 0x.* in f .*anon-struct.c:}}[[@LINE-3]] |
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| 19 | printf(format: "%i\n" , s1p->i1); |
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| 20 | } |
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| 21 | |
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| 22 | int main() { |
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| 23 | s1 s = {.i1 = 1, .i1b = 5}; |
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| 24 | f(s1p: &s, s2p: (s2 *)&s); |
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| 25 | } |
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| 26 | |
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| 27 | // CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation |
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| 28 | |
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