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16d03bd051
Summary: This adds a simple DFSan-based (i.e. taint-guided) fuzzer mutator, see the comments for details. Test Plan: a test added Reviewers: samsonov, pcc Reviewed By: samsonov, pcc Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8669 llvm-svn: 233613
31 lines
766 B
C++
31 lines
766 B
C++
// Simple test for a fuzzer. The fuzzer must find several narrow ranges.
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#include <cstdint>
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#include <cstdlib>
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#include <cstring>
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#include <cstdio>
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extern "C" void TestOneInput(const uint8_t *Data, size_t Size) {
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if (Size < 14) return;
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uint64_t x = 0;
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int64_t y = 0;
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int z = 0;
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unsigned short a = 0;
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memcpy(&x, Data, 8);
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memcpy(&y, Data + Size - 8, 8);
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memcpy(&z, Data + Size / 2, sizeof(z));
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memcpy(&a, Data + Size / 2 + 4, sizeof(a));
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if (x > 1234567890 &&
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x < 1234567895 &&
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y >= 987654321 &&
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y <= 987654325 &&
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z < -10000 &&
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z >= -10005 &&
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z != -10003 &&
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a == 4242) {
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fprintf(stderr, "Found the target: size %zd (%zd, %zd, %d, %d), exiting.\n",
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Size, x, y, z, a);
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exit(1);
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}
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}
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