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unit1650: fix "null pointer passed as argument 1 to memcmp"

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Detected by UndefinedBehaviorSanitizer

Closes #3187
This commit is contained in:
Daniel Stenberg 2018-10-29 10:27:04 +01:00
parent 0c9b09dff4
commit 5728229a4f
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1 changed files with 1 additions and 1 deletions
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tests/unit/unit1650.c
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@ -170,7 +170,7 @@ UNITTEST_START
fprintf(stderr, "DNS encode made: %s\n", hexdump(buffer, size));
return 2;
}
else if(memcmp(req[i].packet, buffer, size)) {
else if(req[i].packet && memcmp(req[i].packet, buffer, size)) {
fprintf(stderr, "DNS encode made: %s\n", hexdump(buffer, size));
fprintf(stderr, "... instead of: %s\n",
hexdump((unsigned char *)req[i].packet, size));