reject 'int test(x, x) int x; {}'

llvm-svn: 49271

clang/lib/Parse/ParseDecl.cpp

@@ -1400,6 +1400,7 @@ void Parser::ParseFunctionDeclaratorIdentifierList(SourceLocation LParenLoc,
 
   // Tok is known to be the first identifier in the list.  Remember this
   // identifier in ParamInfo.
+  ParamsSoFar.insert(Tok.getIdentifierInfo());
   ParamInfo.push_back(DeclaratorChunk::ParamInfo(Tok.getIdentifierInfo(),
                                                  Tok.getLocation(), 0));
   

clang/test/Parser/declarators.c

@@ -30,3 +30,5 @@ int test3(x,
           atype         /* expected-error {{unexpected type name 'atype': expected identifier}} */
          ) int x, atype; {}
 
+int test4(x, x) int x; {} /* expected-error {{redefinition of parameter 'x'}} */
+