[clang][modules] Default `SourceLocation` parameter in `HeaderSearch::lookupModule`

This fixes an LLDB build failure where the `ImportLoc` argument is missing: https://lab.llvm.org/buildbot#builders/68/builds/19975

This change also makes it possible to drop `SourceLocation()` in `Preprocessor::getCurrentModule`.

diff --git a/clang/include/clang/Lex/HeaderSearch.h b/clang/include/clang/Lex/HeaderSearch.h
index 7b19e0d..372589d 100644 (file)
--- a/clang/include/clang/Lex/HeaderSearch.h
+++ b/clang/include/clang/Lex/HeaderSearch.h
@@ -570,7 +570,8 @@ public:
   /// in subdirectories.
   ///
   /// \returns The module with the given name.
-  Module *lookupModule(StringRef ModuleName, SourceLocation ImportLoc,
+  Module *lookupModule(StringRef ModuleName,
+                       SourceLocation ImportLoc = SourceLocation(),
                        bool AllowSearch = true,
                        bool AllowExtraModuleMapSearch = false);
 

diff --git a/clang/lib/Lex/Preprocessor.cpp b/clang/lib/Lex/Preprocessor.cpp
index 5aa831a..bf0b85e 100644 (file)
--- a/clang/lib/Lex/Preprocessor.cpp
+++ b/clang/lib/Lex/Preprocessor.cpp
@@ -518,8 +518,7 @@ Module *Preprocessor::getCurrentModule() {
   if (!getLangOpts().isCompilingModule())
     return nullptr;
 
-  return getHeaderSearchInfo().lookupModule(getLangOpts().CurrentModule,
-                                            SourceLocation());
+  return getHeaderSearchInfo().lookupModule(getLangOpts().CurrentModule);
 }
 
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