CodeGen: Don't try to canonicalize Unix-style paths in CodeView debug info.
Most importantly, we should not replace slashes with backslashes
because that would invalidate the path.
Differential Revision: https://reviews.llvm.org/D45473
llvm-svn: 329838
diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
index f8cd01a..6769ed4 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
@@ -114,6 +114,16 @@
StringRef Dir = File->getDirectory(), Filename = File->getFilename();
+ // If this is a Unix-style path, just use it as is. Don't try to canonicalize
+ // it textually because one of the path components could be a symlink.
+ if (!Dir.empty() && Dir[0] == '/') {
+ Filepath = Dir;
+ if (Dir.back() != '/')
+ Filepath += '/';
+ Filepath += Filename;
+ return Filepath;
+ }
+
// Clang emits directory and relative filename info into the IR, but CodeView
// operates on full paths. We could change Clang to emit full paths too, but
// that would increase the IR size and probably not needed for other users.