(finish_function): If return type of `main' is not `int',

warn instead of doing DEFAULT_MAIN_RETURN. From-SVN: r1486

(finish_function): If return type of `main' is not `int',
warn instead of doing DEFAULT_MAIN_RETURN. From-SVN: r1486
8e077183 · Richard Stallman · de86a82e · 8e077183
Commit 8e077183 authored Jul 07, 1992 by Richard Stallman
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gcc/c-decl.c
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--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -5786,9 +5786,14 @@ finish_function (nested)
 #ifdef DEFAULT_MAIN_RETURN
  if (! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main"))
    {
+      if (TREE_TYPE (fndecl) != integer_type_node)
+	warning_with_decl (fndecl, "return type of `%s' is not `int'");
+      else
+	{
 	  /* Make it so that `main' always returns success by default.  */
 	  DEFAULT_MAIN_RETURN;
 	}
+    }
 #endif

  /* Generate rtl for function exit.  */