Fix a note without a SourceLocation.

#define TEST int y; int x = y;
void foo() {
  TEST
}

-Wuninitialized gives this warning:
invalid-loc.cc:4:3: warning: variable 'y' is uninitialized when used here
      [-Wuninitialized]
  TEST
  ^~~~
invalid-loc.cc:2:29: note: expanded from macro 'TEST'
#define TEST int y; int x = y;
                            ^
note: initialize the variable 'y' to silence this warning
1 warning generated.

The second note lacks filename, line number, and code snippet.  This change
will remove the fixit and only point to variable declaration.

invalid-loc.cc:4:3: warning: variable 'y' is uninitialized when used here
      [-Wuninitialized]
  TEST
  ^~~~
invalid-loc.cc:2:29: note: expanded from macro 'TEST'
#define TEST int y; int x = y;
                            ^
invalid-loc.cc:4:3: note: variable 'y' is declared here
  TEST
  ^
invalid-loc.cc:2:14: note: expanded from macro 'TEST'
#define TEST int y; int x = y;
             ^
1 warning generated.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156045 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/Sema/AnalysisBasedWarnings.cpp b/lib/Sema/AnalysisBasedWarnings.cpp
index 0288621928..c3b802e4db 100644
--- a/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/lib/Sema/AnalysisBasedWarnings.cpp
@@ -441,6 +441,11 @@ static bool SuggestInitializationFixit(Sema &S, const VarDecl *VD) {
   std::string Init = S.getFixItZeroInitializerForType(VariableTy);
   if (Init.empty())
     return false;
+
+  // Don't suggest a fixit inside macros.
+  if (VD->getLocEnd().isMacroID())
+    return false;
+
   SourceLocation Loc = S.PP.getLocForEndOfToken(VD->getLocEnd());
   
   S.Diag(Loc, diag::note_var_fixit_add_initialization) << VD->getDeclName()