similar to: ErrorInfo::message() possibly broken in LLVM-4.0.1

Hi, On 2017-02-01 23:20:40 -0800, Andres Freund wrote: > > Can you give a pointer to the patch so that I can assess the rough > > complexity? If it's simple enough, I'd be happy to help get it > > reviewed and in. If it's more complicated, I probably won't have the > > time to assist. > > Patch (and a prerequisite) attached. Took me a while to get

Hi everyone, I’m currently playing with the clang driver and I encounter a strange bug. It occurs when I used the getSize function from the SymbolRef class. On iOS, the number returned is not always correct (some function have the right size). Sadly, This is my code (at the end of the main function into driver.cpp) : #### ErrorOr<OwningBinary<Binary>> BinaryOrErr =

    Hello all,     I develop a project based on Clang where I need to read all symbols from a library. For symbols libraries (.a/.lib) I use the following code:     auto &FM = C->getFileManager();     ...     auto Buffer = FM.getBufferForFile(FileEntry);     ...     auto Object = llvm::object::ObjectFile::createObjectFile(Buffer);     This code crashes at the last line if the file in

Hi, The behavior of llvm-ar appears to have changed such that the archive symbol table no longer contains symbols contained within bitcode modules in the archive. This behavior appears to have been changed with revision 184083 when the internal implementation of llvm-ar was changed from lib/Archive/Archive.cpp to lib/object/Archive.cpp. This seems to occur because ObjectFile::createObjectFile()

On 19 September 2013 11:59, Jason Holajter <jholajter at arxan.com> wrote: > Hi, > > The behavior of llvm-ar appears to have changed such that the archive symbol > table no longer contains symbols contained within bitcode modules in the > archive. This behavior appears to have been changed with revision 184083 > when the internal implementation of llvm-ar was changed from

Hi all, I'm trying to add pre-compiled object cache to my run-time. I've implemented the object cache as follow: class EngineObjectCache : public llvm::ObjectCache { private: std::unordered_map<std::string, std::unique_ptr<llvm::MemoryBuffer>> CachedObjs; public: virtual void notifyObjectCompiled(const llvm::Module *M, llvm::MemoryBufferRef Obj) { auto id =

Hi James, > It seems to me that "[[clang::warn_unused_result]] class TypedError" is probably sufficient for ensuring people check a status return value; I'm not sure runtime checking really brings much additional value there. I see the attribute as complimentary. The runtime check provides a stronger guarantee: the error cannot be dropped on any path, rather than just "the

Hi, We have several llvm fuzz targets running on OSS-Fuzz, a continuous automated fuzzing service: https://github.com/google/oss-fuzz https://www.usenix.org/sites/default/files/conference/protected-files/usenixsecurity17_slides_serebryany.pdf It has reported a few bugs in cxa_demangler, clang, and dwarfdump already, and we expect to add more fuzz targets to it soon (llvm-isel-fuzzer,

Hi Rafael, > The main thing I like about the diagnostic system is that it lets us > differentiate two related but independent concepts: > > * Giving the human using the program diagnostics about what went wrong. > * Propagating an error to the caller so that the upper library layer > can handle it or pass it up the stack. I don't think these are really independent. Whether

For llvm-dwarfdump we need to handle relocations inside the debug info sections in order to successfully dump the dwarf info including strings. Nick sent out a partial patch that did this not too long ago and I've taken it and gone in a bit of a different direction, but kept the same basic architecture. In place of applying the relocations to the data we've read from disk I'm keeping

Hi Lang, thank You very much. I've used Your code and the creating of the object file works. I think the problem is after creating the object file. When I link the object file with ld I get an executable, which is working right. After changing the clang and llvm libraries from the package control version (.deb) to a own compiled version with debug options, I get an assert() fault. In void

Hi Mehdi, > I’m not sure to understand this claim? You are supposed to be able to extend and subclass the type of diagnostics? (I remember doing it for an out-of-tree LLVM-based project). You can subclass diagnostics, but subclassing (on its own) only lets you change the behaviour of the diagnostic/error itself. What we need, and what this patch supplies, is a way to choose a particular

Hi All, I've been thinking lately about how to improve LLVM's error model and error reporting. A lack of good error reporting in Orc and MCJIT has forced me to spend a lot of time investigating hard-to-debug errors that could easily have been identified if we provided richer error information to the client, rather than just aborting. Kevin Enderby has made similar observations about the

Hi everyone, In llvm 4.0 the MCJIT::getFunctionAddress function return 0 (a null address) when the symbol is not found : *uint64_t MCJIT::getSymbolAddress(const std::string &Name, bool CheckFunctionsOnly) { std::string MangledName; { raw_string_ostream MangledNameStream(MangledName); Mangler::getNameWithPrefix(MangledNameStream, Name, getDataLayout()); } return

Hi Mehdi, > If you subclass a diagnostic right now, isn’t the RTTI information available to the handler, which can then achieve the same dispatching / custom handling per type of diagnostic? > (I’m not advocating the diagnostic system, which I found less convenient to use than what you are proposing) I have to confess I haven't looked at the diagnostic classes closely. I'll take a

Dan Gohman wrote: > > On Aug 25, 2009, at 1:04 AM, Albert Graef wrote: >> . For many applications >> other than LLVM itself, the basic LLVM <=2.5 interface which just >> overwrites existing files is all that's ever needed. > > On LLVM trunk, raw_fd_ostream is now back to overwriting files by > default, as it is the unanimous preference among in-tree users

On Jun 22, 2010, at 4:18 PM, Yuri wrote: > On 06/19/2010 14:03, Yuri wrote: >> This new option (--jit-emit-debug-function-range) will allow to output >> function information for memory ranges that functions occupy in memory >> while they run in JIT. File format generated is like this: >> ... >> 0x5000000 0x5001000 function_name_is_here >> ... >>

Hello, The ObjectFile class (in Object/ObjectFile.h) presents a format-independent interface for object files. In addition, for COFF and MachO, some internal format details are exposed in special headers. For example, Object/COFF.h exposes coff_file_header and coff_symbol. Object/MachOFormat.h exposes headers, "segment load commands" and so on. ELF, however, is not exposed and

On Mon, 27 Feb 2006, Vladimir Prus wrote: > I'm looking for a way to make the the "llc" tool (or any other tool), > directly produce a binary file for some target. ok > The TargetMachine class has a method 'addPassesToEmitMachineCode', that's > suitable for that, but that method also requires an instance of > MachineCodeEmitter. Actually, you probably

Hi Mehdi, > For a generic error class it is not an option indeed, but I was looking at it in the context of LLVM internal use, so just like our RTTI is not an option for “generic RTTI” but fits our need, we could (not should) do the same with ErrorHandling. Definitely. If this was LLVM only there'd be a strong case for using the existing RTTI system. The reason for the new RTTI system is