Fix condition in lto-symtab.c (PR lto/88077).

2018-11-19  Martin Liska  <mliska@suse.cz>

	PR lto/88077
	* lto-symtab.c (lto_symtab_merge): Transform the
	condition before r256989.
2018-11-19  Martin Liska  <mliska@suse.cz>

	PR lto/88077
	* gcc.dg/lto/pr88077_0.c: New test.
	* gcc.dg/lto/pr88077_1.c: New test.

From-SVN: r266277

gcc/lto/ChangeLog

+2018-11-19  Martin Liska  <mliska@suse.cz>
+
+	PR lto/88077
+	* lto-symtab.c (lto_symtab_merge): Transform the
+	condition before r256989.
+
 2018-11-16  Martin Liska  <mliska@suse.cz>
 
 	PR lto/88004

gcc/lto/lto-symtab.c

@@ -374,8 +374,9 @@ lto_symtab_merge (symtab_node *prevailing, symtab_node *entry)
 	 int a[]={1,2,3};
 	 here the first declaration is COMMON
 	 and sizeof(a) == sizeof (int).  */
-	else if (TREE_CODE (type) == ARRAY_TYPE)
-	  return (TYPE_SIZE (decl) == TYPE_SIZE (TREE_TYPE (type)));
+	else if (TREE_CODE (type) != ARRAY_TYPE
+		 || (TYPE_SIZE (type) != TYPE_SIZE (TREE_TYPE (type))))
+	  return false;
       }
 
   return true;

gcc/testsuite/ChangeLog

@@ -19,6 +19,12 @@
 
 2018-11-19  Martin Liska  <mliska@suse.cz>
 
+	PR lto/88077
+	* gcc.dg/lto/pr88077_0.c: New test.
+	* gcc.dg/lto/pr88077_1.c: New test.
+
+2018-11-19  Martin Liska  <mliska@suse.cz>
+
 	* g++.dg/gcov/pr84548.C: Remove remove-gcda.
 	* g++.dg/gcov/ternary.C: Likewise.
 	* lib/gcov.exp: Support pattern of following form:

gcc/testsuite/gcc.dg/lto/pr88077_0.c

+/* { dg-lto-do link } */
+
+int HeaderStr;

gcc/testsuite/gcc.dg/lto/pr88077_1.c

+char HeaderStr[1];
+
+int main()
+{
+  return 0;
+}