Imply must-compile-successfully in ui-tests when the run-pass flag is present.

Author: tommyip

src/tools/compiletest/src/header.rs

@@ -359,10 +359,6 @@ impl TestProps {
                 self.forbid_output.push(of);
             }
 
-            if !self.must_compile_successfully {
-                self.must_compile_successfully = config.parse_must_compile_successfully(ln);
-            }
-
             if !self.check_test_line_numbers_match {
                 self.check_test_line_numbers_match = config.parse_check_test_line_numbers_match(ln);
             }
@@ -371,6 +367,12 @@ impl TestProps {
                 self.run_pass = config.parse_run_pass(ln);
             }
 
+            if !self.must_compile_successfully {
+                // run-pass implies must_compile_sucessfully
+                self.must_compile_successfully =
+                    config.parse_must_compile_successfully(ln) || self.run_pass;
+            }
+
             if let Some(rule) = config.parse_custom_normalization(ln, "normalize-stdout") {
                 self.normalize_stdout.push(rule);
             }