PR c/70281: C FE: fix uninitialized range for __builtin_types_compatible_p

gcc/c/ChangeLog:
	PR c/70281
	* c-parser.c (c_parser_postfix_expression): Set the source range
	for uses of "__builtin_types_compatible_p".

gcc/testsuite/ChangeLog:
	PR c/70281
	* gcc.dg/plugin/diagnostic-test-expressions-1.c
	(test_builtin_types_compatible_p): New test function.
	* gcc.dg/pr70281.c: New test case.

From-SVN: r234340

gcc/c/ChangeLog

+2016-03-18  David Malcolm  <dmalcolm@redhat.com>
+
+	PR c/70281
+	* c-parser.c (c_parser_postfix_expression): Set the source range
+	for uses of "__builtin_types_compatible_p".
+
 2016-03-17  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/70280

gcc/c/c-parser.c

@@ -7782,9 +7782,10 @@ c_parser_postfix_expression (c_parser *parser)
 	      expr.value = error_mark_node;
 	      break;
 	    }
-	  c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
-				     "expected %<)%>");
 	  {
+	    location_t close_paren_loc = c_parser_peek_token (parser)->location;
+	    c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
+				       "expected %<)%>");
 	    tree e1, e2;
 	    e1 = groktypename (t1, NULL, NULL);
 	    e2 = groktypename (t2, NULL, NULL);
@@ -7799,6 +7800,7 @@ c_parser_postfix_expression (c_parser *parser)
 
 	    expr.value
 	      = comptypes (e1, e2) ? integer_one_node : integer_zero_node;
+	    set_c_expr_source_range (&expr, loc, close_paren_loc);
 	  }
 	  break;
 	case RID_BUILTIN_CALL_WITH_STATIC_CHAIN:

gcc/testsuite/ChangeLog

+2016-03-18  David Malcolm  <dmalcolm@redhat.com>
+
+	PR c/70281
+	* gcc.dg/plugin/diagnostic-test-expressions-1.c
+	(test_builtin_types_compatible_p): New test function.
+	* gcc.dg/pr70281.c: New test case.
+
 2016-03-18  Christophe Lyon  <christophe.lyon@linaro.org>
 
 	PR target/70113

gcc/testsuite/gcc.dg/plugin/diagnostic-test-expressions-1.c

@@ -534,6 +534,24 @@ void test_builtin_choose_expr (int i)
 }
 
 extern int f (int);
+
+void test_builtin_types_compatible_p (unsigned long i)
+{
+  __emit_expression_range (0,
+			   f (i) + __builtin_types_compatible_p (long, int)); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+       f (i) + __builtin_types_compatible_p (long, int));
+       ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   { dg-end-multiline-output "" } */
+
+  __emit_expression_range (0,
+			   __builtin_types_compatible_p (long, int) + f (i)); /* { dg-warning "range" } */
+/* { dg-begin-multiline-output "" }
+       __builtin_types_compatible_p (long, int) + f (i));
+       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
+   { dg-end-multiline-output "" } */
+}
+
 void test_builtin_call_with_static_chain (int i, void *ptr)
 {
   __emit_expression_range (0, __builtin_call_with_static_chain (f (i), ptr));  /* { dg-warning "range" } */

gcc/testsuite/gcc.dg/pr70281.c

+/* { dg-options "-Wall -fdiagnostics-show-caret" } */
+int bch_stats_show ()
+{
+  return __builtin_types_compatible_p (unsigned, int) ? "" : "";  /* { dg-warning "cast" } */
+/* { dg-begin-multiline-output "" }
+   return __builtin_types_compatible_p (unsigned, int) ? "" : "";
+          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
+   { dg-end-multiline-output "" } */
+}