search for: stringmapimpl

Hello everyone! I'm a newcomer for the great LLVM project. I've started to explore the source code of LLVM project to become more familiar with it, and I've found some strange usage of move semantics in constructor of StringMapImpl( StringMapImpl &&RHS) {...} class in include/llvm/ADT/StringMap.h line 56. Could anyone explain me the purpose of zeroing of all fields of RHS in the body of this constructor if the declaration of the constructor uses move semantics? Here is the consturctor code below: *StringMapImpl(Strin...

In SmallVector.h: class SmallVectorBase { *protected:* void *BeginX, *EndX, *CapacityX; *protected:* SmallVectorBase(void *FirstEl, size_t Size) : BeginX(FirstEl), EndX(FirstEl), CapacityX((char*)FirstEl+Size) {} In StringMap.h: class StringMapImpl { *protected:* // Array of NumBuckets pointers to entries, null pointers are holes. // TheTable[NumBuckets] contains a sentinel value for easy iteration. Followed // by an array of the actual hash values as unsigned integers. StringMapEntryBase **TheTable; unsigned NumBuckets; unsigned...

.... It was working fine. The failure is now happening when the systems saw their libllvm upgraded to the stage2 bootstrap one. The beginning of the backtrace is the following (generating debug info): Thread 1 "rustc" received signal SIGSEGV, Segmentation fault. 0x00007ffff1e273bc in llvm::StringMapImpl::LookupBucketFor(llvm::StringRef) () from /usr/lib/x86_64-linux-gnu/libLLVM-7.so.1 (gdb) bt #0 0x00007ffff1e273bc in llvm::StringMapImpl::LookupBucketFor(llvm::StringRef) () from /usr/lib/x86_64-linux-gnu/libLLVM-7.so.1 #1 0x00007ffff1f654c9 in ?? () from /usr/lib/x86_64-linux-gnu/libLLVM-7.so.1...

I get the error below (and have for a couple weeks now) when trying to build llvm-gcc on Ubuntu Feisty. In the meantime, on Ubuntu Gutsy, everything has been building fine. Both are release builds for x86. John cc1: StringMap.cpp:177: void llvm::StringMapImpl::RemoveKey(llvm::StringMapEntryBase*): Assertion `V == V2 && "Didn't find key?"' failed.

> I am having the same problem. It was "introduced" by revision 54811, > so it looks like a memory corruption problem. Investigating. Interesting. Bootstrapping with gcac works! Some tests with valgrind also work. My next try is to add some debug code to do bounds checking in SmallVector. Cheers, -- Rafael Avila de Espindola Google | Gordon House | Barrow Street | Dublin 4 |

This series of patches address several issues causing memory usage to grow indefinetely on a long lived process. These are not convenional leaks -- memory would have been freed when the LLVM context or/and JIT engine is destroyed -- but for as long as they aren't the memory is usage effectively ubounded. The issues were found using valgrind with '--show-reachable=yes' option: 1.

...m/include/llvm/Support/raw_ostream.h:141: undefined reference to `llvm::raw_ostream::write(unsigned char)' aklo-aklo.o: In function `llvm::StringMap<long, llvm::MallocAllocator>::find(llvm::StringRef) const': /home/a/llvm/include/llvm/ADT/StringMap.h:284: undefined reference to `llvm::StringMapImpl::FindKey(llvm::StringRef) const' aklo-aklo.o: In function `llvm::StringMap<long, llvm::MallocAllocator>::insert(std::pair<llvm::StringRef, long>)': /home/a/llvm/include/llvm/ADT/StringMap.h:331: undefined reference to `llvm::StringMapImpl::LookupBucketFor(llvm::StringRef)' /...

...erence > to > > `llvm::raw_ostream::write(unsigned char)' > > aklo-aklo.o: In function `llvm::StringMap<long, > > llvm::MallocAllocator>::find(llvm::StringRef) const': > > /home/a/llvm/include/llvm/ADT/StringMap.h:284: undefined reference to > > `llvm::StringMapImpl::FindKey(llvm::StringRef) const' > > aklo-aklo.o: In function `llvm::StringMap<long, > > llvm::MallocAllocator>::insert(std::pair<llvm::StringRef, long>)': > > /home/a/llvm/include/llvm/ADT/StringMap.h:331: undefined reference to > > `llvm::StringMapImpl:...

...t;addModuleProvider(); ////tests executionEngine->removeModuleProvider This produces memory errors that looks something like this: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000004 0x0071aaed in llvm::StringMapImpl::FindKey (this=0x0, KeyStart=0x53db66c "abort", KeyEnd=0x53db671 "") at StringMap.cpp:130 130 unsigned HTSize = NumBuckets; (gdb) where #0 0x0071aaed in llvm::StringMapImpl::FindKey (this=0x0, KeyStart=0x53db66c "abort", KeyEnd=0x53db671 "") at StringM...

...w_ostream.h:141: undefined reference to > `llvm::raw_ostream::write(unsigned char)' > aklo-aklo.o: In function `llvm::StringMap<long, > llvm::MallocAllocator>::find(llvm::StringRef) const': > /home/a/llvm/include/llvm/ADT/StringMap.h:284: undefined reference to > `llvm::StringMapImpl::FindKey(llvm::StringRef) const' > aklo-aklo.o: In function `llvm::StringMap<long, > llvm::MallocAllocator>::insert(std::pair<llvm::StringRef, long>)': > /home/a/llvm/include/llvm/ADT/StringMap.h:331: undefined reference to > `llvm::StringMapImpl::LookupBucketFor(llv...

...cial.opt/x86_64-unknown-linux-gnu/include -I/ptmp/dag/llvm-project.official/llvm/trunk/include -DL_popcountsi2 -c /ptmp/dag/llvm-project.official/llvm-gcc-4.2/trunk/gcc/libgcc2.c -o libgcc/./_popcountsi2.o cc1: /ptmp/dag/llvm-project.official/llvm/trunk/lib/Support/StringMap.cpp:177: void llvm::StringMapImpl::RemoveKey(llvm::StringMapEntryBase*): Assertion `V == V2 && "Didn't find key?"' failed. /ptmp/dag/llvm-project.official/llvm-gcc-4.2/trunk/gcc/libgcc2.c:809: internal compiler error: Aborted Please submit a full bug report, with preprocessed source if appropriate. See &...

...gt; > `llvm::raw_ostream::write(unsigned char)' >> > aklo-aklo.o: In function `llvm::StringMap<long, >> > llvm::MallocAllocator>::find(llvm::StringRef) const': >> > /home/a/llvm/include/llvm/ADT/StringMap.h:284: undefined reference to >> > `llvm::StringMapImpl::FindKey(llvm::StringRef) const' >> > aklo-aklo.o: In function `llvm::StringMap<long, >> > llvm::MallocAllocator>::insert(std::pair<llvm::StringRef, long>)': >> > /home/a/llvm/include/llvm/ADT/StringMap.h:331: undefined reference to >> > `llvm...

...d reference to > > `llvm::raw_ostream::write(unsigned char)' > > aklo-aklo.o: In function `llvm::StringMap<long, > > llvm::MallocAllocator>::find(llvm::StringRef) const': > > /home/a/llvm/include/llvm/ADT/StringMap.h:284: undefined reference to > > `llvm::StringMapImpl::FindKey(llvm::StringRef) const' > > aklo-aklo.o: In function `llvm::StringMap<long, > > llvm::MallocAllocator>::insert(std::pair<llvm::StringRef, long>)': > > /home/a/llvm/include/llvm/ADT/StringMap.h:331: undefined reference to > > `llvm::StringMapImpl:...

...gt; > `llvm::raw_ostream::write(unsigned char)' >> > aklo-aklo.o: In function `llvm::StringMap<long, >> > llvm::MallocAllocator>::find(llvm::StringRef) const': >> > /home/a/llvm/include/llvm/ADT/StringMap.h:284: undefined reference to >> > `llvm::StringMapImpl::FindKey(llvm::StringRef) const' >> > aklo-aklo.o: In function `llvm::StringMap<long, >> > llvm::MallocAllocator>::insert(std::pair<llvm::StringRef, long>)': >> > /home/a/llvm/include/llvm/ADT/StringMap.h:331: undefined reference to >> > `llvm...

...Failure(_HEAP_FAILURE_TYPE FailureType, void * HeapAddress, void * Address, void * Param1, void * Param2, void * Param3) Line 158 C ntdll.dll!RtlFreeHeap(void * HeapHandle, unsigned long Flags, void * BaseAddress) Line 352 C ucrtbase.dll!_free_base(void * block) Line 105 C++ XXXTest.exe!llvm::StringMapImpl::RehashTable(unsigned int BucketNo) Line 238 C++ XXXTest.exe!llvm::StringMap<llvm::ConstantDataSequential * __ptr64,llvm::MallocAllocator>::insert(std::pair<llvm::StringRef,llvm::ConstantDataSequential *> KV) Line 344 C++ [Inline Frame] XXXTest.exe!llvm::StringMap<llvm::Value *,l...

...pt1043.bc 0 opt 0x000000010ebd4498 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40 1 opt 0x000000010ebd4a46 SignalHandler(int) + 342 2 libsystem_platform.dylib 0x00007fff8ce5352a _sigtramp + 26 3 opt 0x000000010eb8ef4f llvm::StringMapImpl::FindKey(llvm::StringRef) const + 303 4 opt 0x000000010e770235 llvm::PMDataManager::add(llvm::Pass*, bool) + 917 5 opt 0x000000010e76d6ef llvm::PMTopLevelManager::schedulePass(llvm::Pass*) + 2367 6 opt 0x000000010d755c9e main + 8846...

...inux-gnu/include > -I/ptmp/dag/llvm-project.official/llvm/trunk/include -DL_popcountsi2 > -c /ptmp/dag/llvm-project.official/llvm-gcc-4.2/trunk/gcc/libgcc2.c -o > libgcc/./_popcountsi2.o > cc1: /ptmp/dag/llvm-project.official/llvm/trunk/lib/Support/StringMap.cpp:177: > void llvm::StringMapImpl::RemoveKey(llvm::StringMapEntryBase*): Assertion `V > == V2 && "Didn't find key?"' failed. > /ptmp/dag/llvm-project.official/llvm-gcc-4.2/trunk/gcc/libgcc2.c:809: internal > compiler error: Aborted Unless this is in something like an inline asm, an internal com...

...lureType, void * > HeapAddress, void * Address, void * Param1, void * Param2, void * Param3) > Line 158 C > ntdll.dll!RtlFreeHeap(void * HeapHandle, unsigned long Flags, void * > BaseAddress) Line 352 C > ucrtbase.dll!_free_base(void * block) Line 105 C++ > XXXTest.exe!llvm::StringMapImpl::RehashTable(unsigned int BucketNo) > Line 238 C++ > XXXTest.exe!llvm::StringMap<llvm::ConstantDataSequential * > __ptr64,llvm::MallocAllocator>::insert(std::pair<llvm::StringRef,llvm::ConstantDataSequential > *> KV) Line 344 C++ > [Inline Frame] XXXTest.exe!llvm::Str...

...0002853ebc llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 60 1 clang-3.9 0x00000000028543a9 2 clang-3.9 0x0000000002852a83 llvm::sys::RunSignalHandlers() + 131 3 clang-3.9 0x00000000028546f4 4 libpthread.so.0 0x00007fc595318330 5 clang-3.9 0x00000000027fbe12 llvm::StringMapImpl::LookupBucketFor(llvm::StringRef) + 466 6 clang-3.9 0x0000000002320fa4 7 clang-3.9 0x0000000002320a10 llvm::ValueSymbolTable::reinsertValue(llvm::Value*) + 112 8 clang-3.9 0x00000000022f0551 llvm::SymbolTableListTraits<llvm::GlobalVariable>::transferNodesFromList(llvm::S...

...uffer-overflow READ 1 Crash Address: 0x60200000009a Crash State: llvm::object::WasmObjectFile::parseCustomSection llvm::object::WasmObjectFile::parseSection llvm::object::WasmObjectFile::WasmObjectFile Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x604000000776 Crash State: llvm::StringMapImpl::LookupBucketFor std::pair<llvm::StringMapIterator<unsigned int>, bool> llvm::StringMap<unsigned llvm::DWARFContext::create Crash Type: Heap-buffer-overflow READ 4 Crash Address: 0x60300000011c Crash State: llvm::identify_magic llvm::object::ObjectFile::createObjectFile _s...