Date: Tue, 24 Apr 2012 03:59:22 +0000 (UTC) From: David Schultz <das@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: r234635 - stable/9/lib/libc/stdio Message-ID: <201204240359.q3O3xMP2029427@svn.freebsd.org>
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Author: das Date: Tue Apr 24 03:59:21 2012 New Revision: 234635 URL: http://svn.freebsd.org/changeset/base/234635 Log: MFC r234529: Ensure that the {,v}swprintf functions always null-terminate the output string, even if an encoding error or malloc failure occurs. Modified: stable/9/lib/libc/stdio/vswprintf.c Directory Properties: stable/9/lib/libc/ (props changed) Modified: stable/9/lib/libc/stdio/vswprintf.c ============================================================================== --- stable/9/lib/libc/stdio/vswprintf.c Tue Apr 24 03:59:18 2012 (r234634) +++ stable/9/lib/libc/stdio/vswprintf.c Tue Apr 24 03:59:21 2012 (r234635) @@ -59,6 +59,7 @@ vswprintf(wchar_t * __restrict s, size_t f._bf._base = f._p = (unsigned char *)malloc(128); if (f._bf._base == NULL) { errno = ENOMEM; + *s = L'\0'; return (-1); } f._bf._size = f._w = 127; /* Leave room for the NUL */ @@ -67,6 +68,7 @@ vswprintf(wchar_t * __restrict s, size_t sverrno = errno; free(f._bf._base); errno = sverrno; + *s = L'\0'; return (-1); } *f._p = '\0'; @@ -80,6 +82,7 @@ vswprintf(wchar_t * __restrict s, size_t free(f._bf._base); if (nwc == (size_t)-1) { errno = EILSEQ; + *s = L'\0'; return (-1); } if (nwc == n) {
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