odr-2_0.C: Drop dg-lto-options.

	* g++.dg/lto/odr-2_0.C: Drop dg-lto-options.
	* g++.dg/lto/odr-3_0.C: Likewise; harden for optimizing compilatoin.

From-SVN: r266388

gcc/testsuite/ChangeLog

+2018-11-22  Jan Hubicka  <hubicka@ucw.cz>
+
+	* g++.dg/lto/odr-2_0.C: Drop dg-lto-options.
+	* g++.dg/lto/odr-3_0.C: Likewise; harden for optimizing compilatoin.
+
 2018-11-22  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/85794

gcc/testsuite/g++.dg/lto/odr-2_0.C

 // { dg-lto-do link }
-// { dg-lto-options { -O0 -flto } }
 enum a {} b; // { dg-lto-warning "6: type 'a' violates the C\\+\\+ One Definition Rule" }
 int
 main(void)

gcc/testsuite/g++.dg/lto/odr-3_0.C

 // { dg-lto-do link }
-// { dg-lto-options { -O0 -flto }  } 
 
 typedef struct {
   int a; // { dg-lto-message "the first difference of corresponding definitions is field 'a'" }
-} YYSTYPE; // { dg-lto-warning "3: warning: type ‘struct YYSTYPE’ violates the C\\+\\+ One Definition Rule" }
-union yyalloc { // { dg-lto-warning "7: type ‘union yyalloc’ violates the C\\+\\+ One Definition Rule" }
+} YYSTYPE; // { dg-lto-message "violates the C\\+\\+ One Definition Rule" 2 } 
+  // Here we get warning and a note:
+  // warning: type 'struct YYSTYPE' violates the C++ One Definition Rule
+  // note: type 'struct YYSTYPE' itself violates the C++ One Definition Rule
+union yyalloc { // { dg-lto-warning "7: type 'union yyalloc' violates the C\\+\\+ One Definition Rule" }
   short yyss;
-  YYSTYPE yyvs; // { dg-lto-message "the first difference of corresponding definitions is field ‘yyvs’" }
+  YYSTYPE yyvs; // { dg-lto-message "the first difference of corresponding definitions is field 'yyvs'" }
 };
-void b() { yyalloc c; }
+extern yyalloc a; // { dg-lto-warning "16: 'a' violates the C\\+\\+ One Definition Rule" }
+int
+main (void) {return a.yyss;}
 
+/* Match warnings as follows:
+  odr-3_0.C:5:3: warning: type 'struct YYSTYPE' violates the C++ One Definition Rule [-Wodr]
+  odr-3_1.C:1:16: note: a different type is defined in another translation unit^
+  odr-3_0.C:4:7: note: the first difference of corresponding definitions is field 'a'
+  odr-3_1.C:1:16: note: a type with different number of fields is defined in another translation unit
+  odr-3_0.C:9:7: warning: type 'union yyalloc' violates the C++ One Definition Rule [-Wodr]
+  odr-3_1.C:6:7: note: a different type is defined in another translation unit
+  odr-3_0.C:11:11: note: the first difference of corresponding definitions is field 'yyvs'
+  odr-3_1.C:11:11: note: a field of same name but different type is defined in another translation unit
+  odr-3_0.C:5:3: note: type 'struct YYSTYPE' itself violates the C++ One Definition Rule
+  odr-3_0.C:13:16: warning: 'a' violates the C++ One Definition Rule [-Wodr]
+  odr-3_1.C:6:7: note: type 'union yyalloc' itself violates the C++ One Definition Rule
+  odr-3_0.C:9:7: note: the incompatible type is defined here
+  odr-3_1.C:15:9: note: 'a' was previously declared here
+  odr-3_1.C:15:9: note: code may be misoptimized unless -fno-strict-aliasing is used
+*/

gcc/testsuite/g++.dg/lto/odr-3_1.C

-typedef struct YYSTYPE { // { dg-lto-message ":16 a different type is defined in another translation unit" }
+typedef struct YYSTYPE { // { dg-lto-message "type" 2 }
+   // We get two notes here:
+   // note: a different type is defined in another translation unit
+   // note: a type with different number of fields is defined in another translation unit
 } YYSTYPE;
-union yyalloc { 
+union yyalloc { // { dg-lto-message "type" 2 }
+   // We get here three notes:
+   // note: a different type is defined in another translation unit
+   // note: type 'union yyalloc' itself violates the C++ One Definition Rule
   short yyss;
-  YYSTYPE yyvs; // { dg-lto-message "the first difference of corresponding definitions is field ‘yyvs’" }
+  YYSTYPE yyvs; // { dg-lto-message "field of same name but different type is defined in another translation unit" }
 
-};
-void a() { yyalloc b; }
+}; 
+
+yyalloc a;  // { dg-lto-message "'a' was previously declared here" }