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annotate compiler-rt/test/msan/memcmp_test.cpp @ 222:81f6424ef0e3 llvm-original

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LLVM original branch
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 18 Jul 2021 22:10:01 +0900
parents 1d019706d866
children
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1 // RUN: %clangxx_msan -O0 -g %s -o %t
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2 // RUN: not %run %t 2>&1 | FileCheck %s
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3 // RUN: MSAN_OPTIONS=intercept_memcmp=0 %run %t
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4
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5 #include <string.h>
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6 #include <stdio.h>
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7 int main(int argc, char **argv) {
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8 char a1[4];
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9 char a2[4];
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10 for (int i = 0; i < argc * 3; i++)
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11 a2[i] = a1[i] = i;
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12 int res = memcmp(a1, a2, 4);
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13 if (!res)
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14 printf("equals");
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15 return 0;
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16 // CHECK: Uninitialized bytes in MemcmpInterceptorCommon at offset 3
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17 // CHECK: MemorySanitizer: use-of-uninitialized-value
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18 }