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Differential D86382 Diff 287131 compiler-rt/test/fuzzer/SimpleCmpTest.cpp

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compiler-rt/test/fuzzer/SimpleCmpTest.cpp

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bool PrintOnce(int Line) { bool PrintOnce(int Line) {
if (!AllLines[Line]) if (!AllLines[Line])
fprintf(stderr, "Seen line %d\n", Line); fprintf(stderr, "Seen line %d\n", Line);
AllLines[Line] = 1; AllLines[Line] = 1;
return true; return true;
} }
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size != 24) return 0; if (Size != 21)
return 0;
uint64_t x = 0; uint64_t x = 0;
int64_t y = 0; int64_t y = 0;
int32_t z = 0; int32_t z = 0;
uint32_t a = 0; uint8_t a = 0;
memcpy(&x, Data, 8); // 8 memcpy(&x, Data, 8); // 8
memcpy(&y, Data + 8, 8); // 16 memcpy(&y, Data + 8, 8); // 16
memcpy(&z, Data + 16, sizeof(z)); // 20 memcpy(&z, Data + 16, sizeof(z)); // 20
memcpy(&a, Data + 20, sizeof(a)); // 24 memcpy(&a, Data + 20, sizeof(a)); // 21
const bool k32bit = sizeof(void*) == 4; const bool k32bit = sizeof(void*) == 4;
if ((k32bit || x > 1234567890) && PrintOnce(__LINE__) && if ((k32bit || x > 1234567890) && PrintOnce(__LINE__) &&
(k32bit || x < 1234567895) && PrintOnce(__LINE__) && (k32bit || x < 1234567895) && PrintOnce(__LINE__) &&
a == 0x4242 && PrintOnce(__LINE__) && a == 0x42 && PrintOnce(__LINE__) &&
(k32bit || y >= 987654321) && PrintOnce(__LINE__) && (k32bit || y >= 987654321) && PrintOnce(__LINE__) &&
(k32bit || y <= 987654325) && PrintOnce(__LINE__) && (k32bit || y <= 987654325) && PrintOnce(__LINE__) &&
z < -10000 && PrintOnce(__LINE__) && z < -10000 && PrintOnce(__LINE__) &&
z >= -10005 && PrintOnce(__LINE__) && z >= -10005 && PrintOnce(__LINE__) &&
z != -10003 && PrintOnce(__LINE__) && z != -10003 && PrintOnce(__LINE__) &&
true) { true) {
fprintf(stderr, "BINGO; Found the target: size %zd (%zd, %zd, %d, %d), exiting.\n", fprintf(stderr, "BINGO; Found the target: size %zd (%zd, %zd, %d, %d), exiting.\n",
Size, x, y, z, a); Size, x, y, z, a);
exit(1); exit(1);
} }
return 0; return 0;
} }
int AllLines[__LINE__ + 1]; // Must be the last line. int AllLines[__LINE__ + 1]; // Must be the last line.