Push location through the MacroUndefined PPCallback and use it to print #undefs in -dD mode. (PR7818)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110523 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index 73bca9a..e68fd58 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -137,6 +137,9 @@
/// MacroDefined - This hook is called whenever a macro definition is seen.
void MacroDefined(const IdentifierInfo *II, const MacroInfo *MI);
+ /// MacroUndefined - This hook is called whenever a macro #undef is seen.
+ void MacroUndefined(SourceLocation Loc, const IdentifierInfo *II,
+ const MacroInfo *MI);
};
} // end anonymous namespace
@@ -280,6 +283,16 @@
EmittedMacroOnThisLine = true;
}
+void PrintPPOutputPPCallbacks::MacroUndefined(SourceLocation Loc,
+ const IdentifierInfo *II,
+ const MacroInfo *MI) {
+ // Only print out macro definitions in -dD mode.
+ if (!DumpDefines) return;
+
+ MoveToLine(Loc);
+ OS << "#undef " << II->getName();
+ EmittedMacroOnThisLine = true;
+}
void PrintPPOutputPPCallbacks::PragmaComment(SourceLocation Loc,
const IdentifierInfo *Kind,