Date: Tue, 21 Oct 2014 16:44:03 +0000 (UTC) From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r273387 - stable/9/contrib/libc-vis Message-ID: <201410211644.s9LGi3B7062984@svn.freebsd.org>
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Author: brooks Date: Tue Oct 21 16:44:03 2014 New Revision: 273387 URL: https://svnweb.freebsd.org/changeset/base/273387 Log: MFC r271287: Merge from NetBSD: PR/49185: Conrad Meyer: strvisx: Handle zero-length input strings gracefully. (don't abuse 0 to mean compute string length internally) PR: 193447 Submitted by: Conrad Meyer <conrad.meyer@isilon.com> Modified: stable/9/contrib/libc-vis/vis.c Directory Properties: stable/9/contrib/libc-vis/ (props changed) Modified: stable/9/contrib/libc-vis/vis.c ============================================================================== --- stable/9/contrib/libc-vis/vis.c Tue Oct 21 16:20:23 2014 (r273386) +++ stable/9/contrib/libc-vis/vis.c Tue Oct 21 16:44:03 2014 (r273387) @@ -1,4 +1,4 @@ -/* $NetBSD: vis.c,v 1.60 2013/02/21 16:21:20 joerg Exp $ */ +/* $NetBSD: vis.c,v 1.62 2014/09/08 17:35:01 christos Exp $ */ /*- * Copyright (c) 1989, 1993 @@ -57,7 +57,7 @@ #include <sys/cdefs.h> #if defined(LIBC_SCCS) && !defined(lint) -__RCSID("$NetBSD: vis.c,v 1.60 2013/02/21 16:21:20 joerg Exp $"); +__RCSID("$NetBSD: vis.c,v 1.62 2014/09/08 17:35:01 christos Exp $"); #endif /* LIBC_SCCS and not lint */ #ifdef __FBSDID __FBSDID("$FreeBSD$"); @@ -357,7 +357,7 @@ istrsenvisx(char *mbdst, size_t *dlen, c ssize_t mbslength, maxolen; _DIAGASSERT(mbdst != NULL); - _DIAGASSERT(mbsrc != NULL); + _DIAGASSERT(mbsrc != NULL || mblength == 0); _DIAGASSERT(mbextra != NULL); /* @@ -375,8 +375,6 @@ istrsenvisx(char *mbdst, size_t *dlen, c /* Allocate space for the wide char strings */ psrc = pdst = extra = NULL; - if (!mblength) - mblength = strlen(mbsrc); if ((psrc = calloc(mblength + 1, sizeof(*psrc))) == NULL) return -1; if ((pdst = calloc((4 * mblength) + 1, sizeof(*pdst))) == NULL) @@ -528,6 +526,15 @@ out: free(psrc); return error; } + +static int +istrsenvisxl(char *mbdst, size_t *dlen, const char *mbsrc, + int flags, const char *mbextra, int *cerr_ptr) +{ + return istrsenvisx(mbdst, dlen, mbsrc, + mbsrc != NULL ? strlen(mbsrc) : 0, flags, mbextra, cerr_ptr); +} + #endif #if !HAVE_SVIS @@ -571,13 +578,13 @@ snvis(char *mbdst, size_t dlen, int c, i int strsvis(char *mbdst, const char *mbsrc, int flags, const char *mbextra) { - return istrsenvisx(mbdst, NULL, mbsrc, 0, flags, mbextra, NULL); + return istrsenvisxl(mbdst, NULL, mbsrc, flags, mbextra, NULL); } int strsnvis(char *mbdst, size_t dlen, const char *mbsrc, int flags, const char *mbextra) { - return istrsenvisx(mbdst, &dlen, mbsrc, 0, flags, mbextra, NULL); + return istrsenvisxl(mbdst, &dlen, mbsrc, flags, mbextra, NULL); } int @@ -646,13 +653,13 @@ nvis(char *mbdst, size_t dlen, int c, in int strvis(char *mbdst, const char *mbsrc, int flags) { - return istrsenvisx(mbdst, NULL, mbsrc, 0, flags, "", NULL); + return istrsenvisxl(mbdst, NULL, mbsrc, flags, "", NULL); } int strnvis(char *mbdst, size_t dlen, const char *mbsrc, int flags) { - return istrsenvisx(mbdst, &dlen, mbsrc, 0, flags, "", NULL); + return istrsenvisxl(mbdst, &dlen, mbsrc, flags, "", NULL); } /*
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