bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[LibFuzzer] Declare and use sanitizer functions in ``fuzzer::ExternalFunctions``	Dan Liew	2016-06-07	1	-2/+3
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	This fixes linking problems on OSX. Unfortunately it turns out we need to use an instance of the ``fuzzer::ExternalFunctions`` object in several places so this commit also replaces all instances with a single global instance. It also turns out initializing a global ``fuzzer::ExternalFunctions`` before main is entered (i.e. letting the object be initialised by the global initializers) is not safe (on OSX the call to ``Printf()`` in the CTOR crashes if it is called from a global initializer) so we instead have a global ``fuzzer::ExternalFunctions`` and initialize it inside ``FuzzerDriver()``. Multiple unit tests depend also depend on the ``fuzzer::ExternalFunctions`` global so a ``main()`` function has been added that initializes it before running any tests. Differential Revision: http://reviews.llvm.org/D20943 llvm-svn: 272072
*	[LibFuzzer] Reimplement how the optional user functions are called.	Dan Liew	2016-06-02	1	-0/+32
	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