Modules hide macro definitions by default, so that silly things like

include guards don't show up as macro definitions in every translation
unit that imports a module. Macro definitions can, however, be
exported with the intentionally-ugly #__export_macro__
directive. Implement this feature by not even bothering to serialize
non-exported macros to a module, because clients of that module need
not (should not) know that these macros even exist.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138943 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/Lex/MacroInfo.cpp b/lib/Lex/MacroInfo.cpp
index 9e682ce306..5a7af56398 100644
--- a/lib/Lex/MacroInfo.cpp
+++ b/lib/Lex/MacroInfo.cpp
@@ -21,6 +21,7 @@ MacroInfo::MacroInfo(SourceLocation DefLoc) : Location(DefLoc) {
   IsGNUVarargs = false;
   IsBuiltinMacro = false;
   IsFromAST = false;
+  ChangedAfterLoad = false;
   IsDisabled = false;
   IsUsed = false;
   IsAllowRedefinitionsWithoutWarning = false;
@@ -40,6 +41,7 @@ MacroInfo::MacroInfo(const MacroInfo &MI, llvm::BumpPtrAllocator &PPAllocator) {
   IsGNUVarargs = MI.IsGNUVarargs;
   IsBuiltinMacro = MI.IsBuiltinMacro;
   IsFromAST = MI.IsFromAST;
+  ChangedAfterLoad = MI.ChangedAfterLoad;
   IsDisabled = MI.IsDisabled;
   IsUsed = MI.IsUsed;
   IsAllowRedefinitionsWithoutWarning = MI.IsAllowRedefinitionsWithoutWarning;