17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*a574db85Sraf * Common Development and Distribution License (the "License"). 6*a574db85Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21*a574db85Sraf 227c478bd9Sstevel@tonic-gate /* 23*a574db85Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* 287c478bd9Sstevel@tonic-gate * __xpg6 (C99/SUSv3) was first introduced in Solaris 10. 297c478bd9Sstevel@tonic-gate * 307c478bd9Sstevel@tonic-gate * This is the default value that is compiled into libc. 317c478bd9Sstevel@tonic-gate * 327c478bd9Sstevel@tonic-gate * The default setting, _C99SUSv3_mode_OFF, means to retain current 337c478bd9Sstevel@tonic-gate * Solaris behavior which is NOT C99 and SUSv3 compliant. 347c478bd9Sstevel@tonic-gate * This is normal. libc determines which standard to use based on 357c478bd9Sstevel@tonic-gate * how applications are compiled. libc at runtime determines which 367c478bd9Sstevel@tonic-gate * behavior to choose based on the value of __xpg6. 377c478bd9Sstevel@tonic-gate * But by default libc retains its original Solaris behavior. 387c478bd9Sstevel@tonic-gate * 397c478bd9Sstevel@tonic-gate * __xpg6 is used to control certain behaviors between the C99 standard, 407c478bd9Sstevel@tonic-gate * the SUSv3 standard, and Solaris. More explanation in inc/xpg6.h. 417c478bd9Sstevel@tonic-gate * The XPG6 C compiler utility (c99) will add an object file that contains an 427c478bd9Sstevel@tonic-gate * alternate definition for __xpg6. The symbol interposition provided 437c478bd9Sstevel@tonic-gate * by the linker will allow libc to find that symbol instead. 447c478bd9Sstevel@tonic-gate * 457c478bd9Sstevel@tonic-gate * Possible settings are available and documented in inc/xpg6.h. 467c478bd9Sstevel@tonic-gate */ 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate #include "xpg6.h" 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate unsigned int __xpg6 = _C99SUSv3_mode_OFF; 51*a574db85Sraf 52*a574db85Sraf unsigned int libc__xpg6; /* copy of __xpg6, private to libc */ 53