derek.holloway
7502bf64a4
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70 lines
3.2 KiB
C
70 lines
3.2 KiB
C
// RUN: %clang_tysan -O0 -mllvm -tysan-outline-instrumentation=false %s -o %t && %run %t 10 >%t.out.0 2>&1
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// RUN: FileCheck %s < %t.out.0
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// RUN: %clang_tysan -O2 -mllvm -tysan-outline-instrumentation=false %s -o %t && %run %t 10 >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clang_tysan -O0 -mllvm -tysan-outline-instrumentation=true %s -o %t && %run %t 10 >%t.out.0 2>&1
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// RUN: FileCheck %s < %t.out.0
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// RUN: %clang_tysan -O2 -mllvm -tysan-outline-instrumentation=true %s -o %t && %run %t 10 >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void __attribute__((noinline)) add_flt(float *a) {
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*a += 2.0f;
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: READ of size 4 at {{.*}} with type float accesses an existing object of type int
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-3]]
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: WRITE of size 4 at {{.*}} with type float accesses an existing object of type int
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-6]]
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: READ of size 4 at {{.*}} with type float accesses an existing object of type long
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-9]]
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: WRITE of size 4 at {{.*}} with type float accesses an existing object of type long
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-12]]
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: READ of size 4 at {{.*}} with type float accesses part of an existing object of type long that starts at offset -4
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-15]]
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: WRITE of size 4 at {{.*}} with type float accesses part of an existing object of type long that starts at offset -4
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-18]]
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: READ of size 4 at {{.*}} with type float partially accesses an object of type short that starts at offset 2
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// CHECK: {{#0 0x.* in add_flt .*basic.c:}}[[@LINE-21]]
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}
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int main(int argc, char *argv[]) {
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int x = atoi(argv[1]);
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add_flt((float *)&x);
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printf("x = %d\n", x);
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long y = x;
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add_flt((float *)&y);
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printf("y = %ld\n", y);
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add_flt(((float *)&y) + 1);
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printf("y = %ld\n", y);
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char *mem = (char *)malloc(4 * sizeof(short));
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memset(mem, 0, 4 * sizeof(short));
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*(short *)(mem + 2) = x;
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add_flt((float *)mem);
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short s1 = *(short *)mem;
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: READ of size 2 at {{.*}} with type short accesses an existing object of type float
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// CHECK: {{#0 0x.* in main .*basic.c:}}[[@LINE-3]]
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short s2 = *(short *)(mem + 2);
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// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
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// CHECK: READ of size 2 at {{.*}} with type short accesses part of an existing object of type float that starts at offset -2
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// CHECK: {{#0 0x.* in main .*basic.c:}}[[@LINE-3]]
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printf("m[0] = %d, m[1] = %d\n", s1, s2);
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free(mem);
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return 0;
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}
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// CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation
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