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.

llvm-svn: 156045

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/test/Sema/uninit-variables.c b/clang/test/Sema/uninit-variables.c
index d62186df731..30db640323e 100644
--- a/clang/test/Sema/uninit-variables.c
+++ b/clang/test/Sema/uninit-variables.c
@@ -424,3 +424,13 @@ void rdar9432305(float *P) {
   for (; i < 10000; ++i) // expected-warning {{variable 'i' is uninitialized when used here}}
     P[i] = 0.0f;
 }
+
+// Test that fixits are not emitted inside macros.
+#define UNINIT(T, x, y) T x; T y = x;
+#define ASSIGN(T, x, y) T y = x;
+void test54() {
+  UNINIT(int, a, b);  // expected-warning {{variable 'a' is uninitialized when used here}} \
+                      // expected-note {{variable 'a' is declared here}}
+  int c;  // expected-note {{initialize the variable 'c' to silence this warning}}
+  ASSIGN(int, c, d);  // expected-warning {{variable 'c' is uninitialized when used here}}
+}