Hi!
Enum options should not allow negative form, otherwise the option handling
ICEs on it. -fsso-struct= allows only big-endian or little-endian,
-fno-sso-struct=big-endian or -fno-sso-struct=whatever makes no sense.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
2017-01-02 Jakub Jelinek <ja...@redhat.com>
PR driver/78957
* c.opt (fsso-struct=): Add RejectNegative.
* gcc.dg/pr78957.c: New test.
--- gcc/c-family/c.opt.jj 2016-12-29 13:56:36.000000000 +0100
+++ gcc/c-family/c.opt 2017-01-01 12:10:16.744757723 +0100
@@ -1626,7 +1626,7 @@ fsquangle
C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
fsso-struct=
-C ObjC Joined Enum(sso_struct) Var(default_sso) Init(SSO_NATIVE)
+C ObjC Joined RejectNegative Enum(sso_struct) Var(default_sso) Init(SSO_NATIVE)
-fsso-struct=[big-endian|little-endian] Set the default scalar storage
order.
Enum
--- gcc/testsuite/gcc.dg/pr78957.c.jj 2017-01-01 12:02:41.859809492 +0100
+++ gcc/testsuite/gcc.dg/pr78957.c 2017-01-01 12:06:05.951094270 +0100
@@ -0,0 +1,6 @@
+/* PR driver/78957 */
+/* { dg-do compile } */
+/* { dg-options "-fno-sso-struct=none" } */
+/* { dg-error "unrecognized command line option" "" { target *-*-* } 0 } */
+
+int i;
Jakub
