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-rw-r--r--lib/Frontend/PrintPreprocessedOutput.cpp11
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index 180c177444..61f2b9e288 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -270,11 +270,12 @@ void PrintPPOutputPPCallbacks::FileChanged(SourceLocation Loc,
if (IncludeLoc.isValid())
MoveToLine(IncludeLoc);
} else if (Reason == PPCallbacks::SystemHeaderPragma) {
- MoveToLine(NewLine);
-
- // TODO GCC emits the # directive for this directive on the line AFTER the
- // directive and emits a bunch of spaces that aren't needed. Emulate this
- // strange behavior.
+ // GCC emits the # directive for this directive on the line AFTER the
+ // directive and emits a bunch of spaces that aren't needed. This is because
+ // otherwise we will emit a line marker for THIS line, which requires an
+ // extra blank line after the directive to avoid making all following lines
+ // off by one. We can do better by simply incrementing NewLine here.
+ NewLine += 1;
}
CurLine = NewLine;