pass the reason for failure up from MemoryBuffer and report it
in diagnostics when we fail to open a file. This allows us to
report things like:
$ clang test.c -I.
test.c:2:10: fatal error: error opening file './foo.h': Permission denied
#include "foo.h"
^
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90276 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPLexerChange.cpp b/lib/Lex/PPLexerChange.cpp
index 8a61d7b..1580b87 100644
--- a/lib/Lex/PPLexerChange.cpp
+++ b/lib/Lex/PPLexerChange.cpp
@@ -64,7 +64,8 @@
/// EnterSourceFile - Add a source file to the top of the include stack and
/// start lexing tokens from it instead of the current buffer.
-bool Preprocessor::EnterSourceFile(FileID FID, const DirectoryLookup *CurDir) {
+bool Preprocessor::EnterSourceFile(FileID FID, const DirectoryLookup *CurDir,
+ std::string *ErrorStr) {
assert(CurTokenLexer == 0 && "Cannot #include a file inside a macro!");
++NumEnteredSourceFiles;
@@ -79,7 +80,8 @@
}
// Get the MemoryBuffer for this FID, if it fails, we fail.
- const llvm::MemoryBuffer *InputFile = getSourceManager().getBuffer(FID);
+ const llvm::MemoryBuffer *InputFile =
+ getSourceManager().getBuffer(FID, ErrorStr);
if (InputFile == 0)
return true;