In LLDB we try to mmap any object file we load including core files. Recently I
received a 468GB core file. mmap fails in LLVM and then it will fall back to
trying to allocate a memory buffer that large and reading a file into it.
The failing call occurs in:
DataBufferSP ObjectFile::MapFileData(const FileSpec &file, uint64_t Size,
uint64_t Offset) {
return DataBufferLLVM::CreateSliceFromPath(file.GetPath(), Size, Offset);
}
Does LLVM have any class that could help deal with really large files and
randomly accessing data within it?
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