diff options
Diffstat (limited to 'clang/lib/Lex/ModuleMap.cpp')
| -rw-r--r-- | clang/lib/Lex/ModuleMap.cpp | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/clang/lib/Lex/ModuleMap.cpp b/clang/lib/Lex/ModuleMap.cpp index 70d37d3d708..568894c32b9 100644 --- a/clang/lib/Lex/ModuleMap.cpp +++ b/clang/lib/Lex/ModuleMap.cpp @@ -1485,7 +1485,19 @@ void ModuleMapParser::parseModuleDecl() { // Determine whether this (sub)module has already been defined. if (Module *Existing = Map.lookupModuleQualified(ModuleName, ActiveModule)) { - if (Existing->DefinitionLoc.isInvalid() && !ActiveModule) { + // We might see a (re)definition of a module that we already have a + // definition for in two cases: + // - If we loaded one definition from an AST file and we've just found a + // corresponding definition in a module map file, or + bool LoadedFromASTFile = Existing->DefinitionLoc.isInvalid(); + // - If we're building a (preprocessed) module and we've just loaded the + // module map file from which it was created. + bool ParsedAsMainInput = + Map.LangOpts.getCompilingModule() == LangOptions::CMK_ModuleMap && + Map.LangOpts.CurrentModule == ModuleName && + SourceMgr.getDecomposedLoc(ModuleNameLoc).first != + SourceMgr.getDecomposedLoc(Existing->DefinitionLoc).first; + if (!ActiveModule && (LoadedFromASTFile || ParsedAsMainInput)) { // Skip the module definition. skipUntil(MMToken::RBrace); if (Tok.is(MMToken::RBrace)) |
