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[MCJIT] Re-enable GDB registration (temporarily disabled in r222811), but check

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that we actually have an object to register first.

For MachO objects, RuntimeDyld::LoadedObjectInfo::getObjectForDebug returns an
empty OwningBinary<ObjectFile> which was causing crashes in the GDB registration
code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames 2014-11-26 07:39:03 +00:00
parent 11f81ba6a6
commit 31862ae541
2 changed files with 6 additions and 0 deletions
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1
lib/ExecutionEngine/MCJIT/MCJIT.cpp
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@ -75,6 +75,7 @@ MCJIT::MCJIT(std::unique_ptr<Module> M, std::unique_ptr<TargetMachine> tm,
OwnedModules.addModule(std::move(First));
setDataLayout(TM->getSubtargetImpl()->getDataLayout());
RegisterJITEventListener(JITEventListener::createGDBRegistrationListener());
}
MCJIT::~MCJIT() {

5
lib/ExecutionEngine/RuntimeDyld/GDBRegistrationListener.cpp
View File

@ -151,6 +151,11 @@ void GDBJITRegistrationListener::NotifyObjectEmitted(
const RuntimeDyld::LoadedObjectInfo &L) {
OwningBinary<ObjectFile> DebugObj = L.getObjectForDebug(Object);
// Bail out if debug objects aren't supported.
if (!DebugObj.getBinary())
return;
const char *Buffer = DebugObj.getBinary()->getMemoryBufferRef().getBufferStart();
size_t Size = DebugObj.getBinary()->getMemoryBufferRef().getBufferSize();