Author: gnn Date: Tue Oct 11 16:12:12 2016 New Revision: 307044 URL: https://svnweb.freebsd.org/changeset/base/307044
Log: Corrected non-portable reuse of va_list in dt_printf() Submitted by: Graeme Jenkinson Reviewed by: markj MFC after: 2 weeks Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D8157 Modified: head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c Modified: head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c ============================================================================== --- head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c Tue Oct 11 15:55:45 2016 (r307043) +++ head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_subr.c Tue Oct 11 16:12:12 2016 (r307044) @@ -581,6 +581,7 @@ int dt_printf(dtrace_hdl_t *dtp, FILE *fp, const char *format, ...) { va_list ap; + va_list ap2; int n; #ifndef illumos @@ -605,11 +606,13 @@ dt_printf(dtrace_hdl_t *dtp, FILE *fp, c len = dtp->dt_sprintf_buflen - len; assert(len >= 0); - if ((n = vsnprintf(buf, len, format, ap)) < 0) + va_copy(ap2, ap); + if ((n = vsnprintf(buf, len, format, ap2)) < 0) n = dt_set_errno(dtp, errno); + va_end(ap2); va_end(ap); - + return (n); } @@ -640,11 +643,14 @@ dt_printf(dtrace_hdl_t *dtp, FILE *fp, c dtp->dt_buffered_buf[0] = '\0'; } - if ((needed = vsnprintf(NULL, 0, format, ap)) < 0) { + va_copy(ap2, ap); + if ((needed = vsnprintf(NULL, 0, format, ap2)) < 0) { rval = dt_set_errno(dtp, errno); + va_end(ap2); va_end(ap); return (rval); } + va_end(ap2); if (needed == 0) { va_end(ap); @@ -670,12 +676,15 @@ dt_printf(dtrace_hdl_t *dtp, FILE *fp, c dtp->dt_buffered_size <<= 1; } + va_copy(ap2, ap); if (vsnprintf(&dtp->dt_buffered_buf[dtp->dt_buffered_offs], - avail, format, ap) < 0) { + avail, format, ap2) < 0) { rval = dt_set_errno(dtp, errno); + va_end(ap2); va_end(ap); return (rval); } + va_end(ap2); dtp->dt_buffered_offs += needed; assert(dtp->dt_buffered_buf[dtp->dt_buffered_offs] == '\0'); @@ -683,8 +692,10 @@ dt_printf(dtrace_hdl_t *dtp, FILE *fp, c return (0); } - n = vfprintf(fp, format, ap); + va_copy(ap2, ap); + n = vfprintf(fp, format, ap2); fflush(fp); + va_end(ap2); va_end(ap); if (n < 0) { _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
