diff options
Diffstat (limited to 'generic/tclStringObj.c')
| -rw-r--r-- | generic/tclStringObj.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c index 9ba62f5..8b33fe1 100644 --- a/generic/tclStringObj.c +++ b/generic/tclStringObj.c @@ -33,7 +33,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclStringObj.c,v 1.128 2009/07/31 16:55:58 dgp Exp $ */ + * RCS: @(#) $Id: tclStringObj.c,v 1.129 2009/08/27 19:34:24 dgp Exp $ */ #include "tclInt.h" #include "tommath.h" @@ -2218,6 +2218,10 @@ Tcl_AppendFormatToObj( if (gotPrecision) { *p++ = '.'; p += sprintf(p, "%d", precision); + if (precision > INT_MAX - length) { + msg=overflow; + goto errorMsg; + } length += precision; } @@ -2230,9 +2234,15 @@ Tcl_AppendFormatToObj( segment = Tcl_NewObj(); allocSegment = 1; - Tcl_SetObjLength(segment, length); + if (!Tcl_AttemptSetObjLength(segment, length)) { + msg = overflow; + goto errorMsg; + } bytes = TclGetString(segment); - Tcl_SetObjLength(segment, sprintf(bytes, spec, d)); + if (!Tcl_AttemptSetObjLength(segment, sprintf(bytes, spec, d))) { + msg = overflow; + goto errorMsg; + } break; } default: |