[COFF] Print the file name on errors writing the pdb file

This avoids confusing contextless error messages such as "No such file
or directory" if e.g. the pdb output file should be written to a
nonexistent directory. (This can happen with linkrepro scripts, at least
old ones.)

Differential Revision: https://reviews.llvm.org/D66466

llvm-svn: 369425

diff --git a/lld/COFF/PDB.cpp b/lld/COFF/PDB.cpp
index 1dc1353..25952b5 100644 (file)
--- a/lld/COFF/PDB.cpp
+++ b/lld/COFF/PDB.cpp
@@ -1693,6 +1693,7 @@ void PDBLinker::addSections(ArrayRef<OutputSection *> outputSections,
 }
 
 void PDBLinker::commit(codeview::GUID *guid) {
+  ExitOnError exitOnErr((config->pdbPath + ": ").str());
   // Write to a file.
   exitOnErr(builder.commit(config->pdbPath, guid));
 }