* c-parse.in (lineno_stmt_decl_or_labels_ending_decl): Also warn

	when warn_declaration_after_statement.  Call pedwarn_c90, not
	pedwarn.  Correct message: it's "ISO C90", not "ISO C89".
	* c-common.c (warn_declaration_after_statement): Define.
	* c-common.h (warn_declaration_after_statement): Declare.
	* c.opt (Wdeclaration-after-statement): New.
	* c-errors.c (pedwarn_c90): New function.
	* c-opts.c (c_common_handle_option) <case
	OPT_Wdeclaration_after_statement>: New.
	* c-tree.h (pedwarn_c90): Declare.
	* doc/invoke.texi (Option Summary): Document
	-Wdeclaration-after-statement.
	(Warning Options): Ditto.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@69899 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 18 insertions, 0 deletions

diff --git a/gcc/c-errors.c b/gcc/c-errors.c
index 2a2fdc0c440..fa71b8cfa97 100644
--- a/gcc/c-errors.c
+++ b/gcc/c-errors.c
@@ -43,3 +43,21 @@ pedwarn_c99 (const char *msgid, ...)
   report_diagnostic (&diagnostic);
   va_end (ap);
 }
+
+/* Issue an ISO C90 pedantic warning MSGID.  This function is supposed to
+   be used for matters that are allowed in ISO C99 but not supported in
+   ISO C90, thus we explicitly don't pedwarn when C99 is specified.
+   (There is no flag_c90.)  */
+
+void
+pedwarn_c90 (const char *msgid, ...)
+{
+  diagnostic_info diagnostic;
+  va_list ap;
+
+  va_start (ap, msgid);
+  diagnostic_set_info (&diagnostic, msgid, &ap, input_location,
+                       flag_isoc99 ? DK_WARNING : pedantic_error_kind ());
+  report_diagnostic (&diagnostic);
+  va_end (ap);
+}