diff options
Diffstat (limited to 'llvm/lib/MC/MCDwarf.cpp')
| -rw-r--r-- | llvm/lib/MC/MCDwarf.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp index b1dced7..e7c0d37 100644 --- a/llvm/lib/MC/MCDwarf.cpp +++ b/llvm/lib/MC/MCDwarf.cpp @@ -447,10 +447,17 @@ static void emitOneV5FileEntry(MCStreamer *MCOS, const MCDwarfFile &DwarfFile, StringRef(reinterpret_cast<const char *>(Cksum.data()), Cksum.size())); } if (HasAnySource) { + // From https://dwarfstd.org/issues/180201.1.html + // * The value is an empty null-terminated string if no source is available + StringRef Source = DwarfFile.Source.value_or(StringRef()); + // * If the source is available but is an empty file then the value is a + // null-terminated single "\n". + if (DwarfFile.Source && DwarfFile.Source->empty()) + Source = "\n"; if (LineStr) - LineStr->emitRef(MCOS, DwarfFile.Source.value_or(StringRef())); + LineStr->emitRef(MCOS, Source); else { - MCOS->emitBytes(DwarfFile.Source.value_or(StringRef())); // Source and... + MCOS->emitBytes(Source); // Source and... MCOS->emitBytes(StringRef("\0", 1)); // its null terminator. } } |