Add 'previous declaration is here' note for param redefinition

errors, e.g.:

t.c:1:21: error: redefinition of parameter 'x'
int test(int x, int x);
                    ^
t.c:1:14: note: previous declaration is here
int test(int x, int x);
             ^

llvm-svn: 96769

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/test/Sema/arg-duplicate.c b/clang/test/Sema/arg-duplicate.c
index ca091eb309e..feeb458a3f4 100644
--- a/clang/test/Sema/arg-duplicate.c
+++ b/clang/test/Sema/arg-duplicate.c
@@ -2,7 +2,8 @@
 
 int f3(y, x, 
        x)          // expected-error {{redefinition of parameter}}
-  int y, x, 
+  int y, 
+      x,           // expected-note {{previous declaration is here}}
       x;           // expected-error {{redefinition of parameter}}
 {
   return x + y;