Date: Tue, 18 Sep 2012 13:13:28 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r240648 - releng/9.1/lib/libc/stdlib Message-ID: <201209181313.q8IDDSG9097917@svn.freebsd.org>
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Author: emaste Date: Tue Sep 18 13:13:28 2012 New Revision: 240648 URL: http://svn.freebsd.org/changeset/base/240648 Log: MFC r240412: According to a clarification at http://austingroupbugs.net/view.php?id=503 ptsname may set errno, so avoid saving and restoring errno across the function. PR: standards/171572 Approved by: re Sponsored by: ADARA Networks Modified: releng/9.1/lib/libc/stdlib/ptsname.3 releng/9.1/lib/libc/stdlib/ptsname.c Directory Properties: releng/9.1/lib/libc/ (props changed) Modified: releng/9.1/lib/libc/stdlib/ptsname.3 ============================================================================== --- releng/9.1/lib/libc/stdlib/ptsname.3 Tue Sep 18 13:03:00 2012 (r240647) +++ releng/9.1/lib/libc/stdlib/ptsname.3 Tue Sep 18 13:13:28 2012 (r240648) @@ -102,7 +102,8 @@ of the slave device on success; otherwis pointer is returned. .Sh ERRORS The -.Fn grantpt +.Fn grantpt , +.Fn ptsname and .Fn unlockpt functions may fail and set Modified: releng/9.1/lib/libc/stdlib/ptsname.c ============================================================================== --- releng/9.1/lib/libc/stdlib/ptsname.c Tue Sep 18 13:03:00 2012 (r240647) +++ releng/9.1/lib/libc/stdlib/ptsname.c Tue Sep 18 13:13:28 2012 (r240648) @@ -77,7 +77,6 @@ ptsname(int fildes) { static char pt_slave[sizeof _PATH_DEV + SPECNAMELEN] = _PATH_DEV; char *ret = NULL; - int sverrno = errno; /* Make sure fildes points to a master device. */ if (__isptmaster(fildes) != 0) @@ -87,7 +86,6 @@ ptsname(int fildes) sizeof pt_slave - (sizeof _PATH_DEV - 1)) != NULL) ret = pt_slave; -done: /* Make sure ptsname() does not overwrite errno. */ - errno = sverrno; +done: return (ret); }
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