diff options
Diffstat (limited to 'generic')
| -rw-r--r-- | generic/tclCompCmds.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c index 0737ab2..9c20bac 100644 --- a/generic/tclCompCmds.c +++ b/generic/tclCompCmds.c @@ -11,7 +11,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclCompCmds.c,v 1.39.2.4 2006/11/28 22:20:00 andreas_kupries Exp $ + * RCS: @(#) $Id: tclCompCmds.c,v 1.39.2.5 2007/03/01 10:16:10 dkf Exp $ */ #include "tclInt.h" @@ -894,6 +894,18 @@ TclCompileForeachCmd(interp, parsePtr, envPtr) goto done; } numVars = varcList[loopIndex]; + + /* + * If the variable list is empty, we can enter an infinite + * loop when the interpreted version would not. Take care to + * ensure this does not happen. [Bug 1671138] + */ + + if (numVars == 0) { + code = TCL_ERROR; + goto done; + } + for (j = 0; j < numVars; j++) { CONST char *varName = varvList[loopIndex][j]; if (!TclIsLocalScalar(varName, (int) strlen(varName))) { |