diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | generic/tclCmdMZ.c | 8 | ||||
| -rw-r--r-- | tests/string.test | 5 |
3 files changed, 19 insertions, 2 deletions
@@ -1,3 +1,11 @@ +2001-05-14 Donal K. Fellows <fellowsd@cs.man.ac.uk> + + * generic/tclCmdMZ.c (Tcl_StringObjCmd): + * tests/string.test (string-4.14): Negative string indices should + not be added as offsets to the result of [string first] but + instead be treated as referring to the start of the string. + [Bug: 423581] + 2001-05-11 Mo DeJong <mdejong@redhat.com> * unix/Makefile.in: Add a LDFLAGS variable to the diff --git a/generic/tclCmdMZ.c b/generic/tclCmdMZ.c index 54c1878..6d6939e 100644 --- a/generic/tclCmdMZ.c +++ b/generic/tclCmdMZ.c @@ -13,7 +13,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclCmdMZ.c,v 1.36 2001/04/24 20:59:17 kennykb Exp $ + * RCS: @(#) $Id: tclCmdMZ.c,v 1.37 2001/05/14 08:57:26 dkf Exp $ */ #include "tclInt.h" @@ -1267,6 +1267,12 @@ Tcl_StringObjCmd(dummy, interp, objc, objv) } else if (start > 0) { ustring2 += start; length2 -= start; + } else if (start < 0) { + /* + * Invalid start index mapped to string start; + * Bug #423581 + */ + start = 0; } } diff --git a/tests/string.test b/tests/string.test index aad463e..b869206 100644 --- a/tests/string.test +++ b/tests/string.test @@ -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: string.test,v 1.28 2001/04/06 10:50:00 dkf Exp $ +# RCS: @(#) $Id: string.test,v 1.29 2001/05/14 08:57:26 dkf Exp $ if {[lsearch [namespace children] ::tcltest] == -1} { package require tcltest @@ -197,6 +197,9 @@ test string-4.12 {string first, start index} { test string-4.13 {string first, start index} { string first \u7266 abc\u7266x end-2 } 3 +test string-4.14 {string first, negative start index} { + string first b abc -1 +} 1 test string-5.1 {string index} { list [catch {string index} msg] $msg |