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8b5c81728c
The motivation for this change is to fix linking issues on OSX. However this only partially fixes linking issues (the uninstrumented tests and a few others won't succesfully link yet). This change introduces a struct of function pointers (``fuzzer::ExternalFuntions``) which when initialised will point to the optional functions if they are available. Currently these ``LLVMFuzzerInitialize`` and ``LLVMFuzzerCustomMutator`` functions. Two implementations of ``fuzzer::ExternalFunctions`` constructor are provided one for Linux and one for OSX. The OSX implementation uses ``dlsym()`` because the prior implementation using weak symbols does not work unless the additional flags are passed to the linker. The Linux implementation continues to use weak symbols because the ``dlsym()`` approach does not work unless additional flags are passed to the linker. Differential Revision: http://reviews.llvm.org/D20741 llvm-svn: 271491
23 lines
748 B
C++
23 lines
748 B
C++
//===- FuzzerMain.cpp - main() function and flags -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// main() and flags.
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//===----------------------------------------------------------------------===//
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#include "FuzzerInterface.h"
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#include "FuzzerInternal.h"
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extern "C" {
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// This function should be defined by the user.
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int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
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} // extern "C"
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int main(int argc, char **argv) {
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return fuzzer::FuzzerDriver(&argc, &argv, LLVMFuzzerTestOneInput);
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}
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