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| author | dkf <donal.k.fellows@manchester.ac.uk> | 2007-03-10 14:57:36 (GMT) |
|---|---|---|
| committer | dkf <donal.k.fellows@manchester.ac.uk> | 2007-03-10 14:57:36 (GMT) |
| commit | 9b37ffdd3cd479883df0f3aacbd2e442b40fd5e4 (patch) | |
| tree | 4c34e2b06eddc7337a184990ead7f7016e28f670 /generic/tclCmdIL.c | |
| parent | 3550b2068c9275350ca9f9ab2536ff8bf09ec1fe (diff) | |
| download | tcl-9b37ffdd3cd479883df0f3aacbd2e442b40fd5e4.zip tcl-9b37ffdd3cd479883df0f3aacbd2e442b40fd5e4.tar.gz tcl-9b37ffdd3cd479883df0f3aacbd2e442b40fd5e4.tar.bz2 | |
Fix [Bug 1675116] in a way suitable for 8.4.
Diffstat (limited to 'generic/tclCmdIL.c')
| -rw-r--r-- | generic/tclCmdIL.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/generic/tclCmdIL.c b/generic/tclCmdIL.c index d44ba7a..85e51d0 100644 --- a/generic/tclCmdIL.c +++ b/generic/tclCmdIL.c @@ -15,7 +15,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclCmdIL.c,v 1.47.2.10 2006/11/28 22:20:00 andreas_kupries Exp $ + * RCS: @(#) $Id: tclCmdIL.c,v 1.47.2.11 2007/03/10 14:57:38 dkf Exp $ */ #include "tclInt.h" @@ -3799,6 +3799,15 @@ Tcl_LsortObjCmd(clientData, interp, objc, objv) elementArray[i].objPtr = listObjPtrs[i]; elementArray[i].count = 0; elementArray[i].nextPtr = &elementArray[i+1]; + + /* + * When sorting using a command, we are reentrant and therefore might + * have the representation of the list being sorted shimmered out from + * underneath our feet. Increment the reference counts of the elements + * to sort to prevent this. [Bug 1675116] + */ + + Tcl_IncrRefCount(elementArray[i].objPtr); } elementArray[length-1].nextPtr = NULL; elementPtr = MergeSort(elementArray, &sortInfo); @@ -3824,6 +3833,9 @@ Tcl_LsortObjCmd(clientData, interp, objc, objv) } } } + for (i=0; i<length; i++) { + Tcl_DecrRefCount(elementArray[i].objPtr); + } ckfree((char*) elementArray); done: |