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| author | Miguel Sofer <miguel.sofer@gmail.com> | 2008-07-29 13:51:00 (GMT) |
|---|---|---|
| committer | Miguel Sofer <miguel.sofer@gmail.com> | 2008-07-29 13:51:00 (GMT) |
| commit | bd8f54a3a1f6e7c92b5e1709040f191d8e9a59a9 (patch) | |
| tree | 3680eb99bf08661c6c0c460cae70a0325c5d8929 /generic/tclExecute.c | |
| parent | 10ea20bb785acaeb65668000042284010fd63a70 (diff) | |
| download | tcl-bd8f54a3a1f6e7c92b5e1709040f191d8e9a59a9.zip tcl-bd8f54a3a1f6e7c92b5e1709040f191d8e9a59a9.tar.gz tcl-bd8f54a3a1f6e7c92b5e1709040f191d8e9a59a9.tar.bz2 | |
* generic/tclExecute.c: fix [Bug 2030670] that cause
TclStackRealloc to panic on rare corner cases. Thx ajpasadyn for
diagnose and patch.
Diffstat (limited to 'generic/tclExecute.c')
| -rw-r--r-- | generic/tclExecute.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/generic/tclExecute.c b/generic/tclExecute.c index 7866a7c..833197a 100644 --- a/generic/tclExecute.c +++ b/generic/tclExecute.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: tclExecute.c,v 1.369.2.2 2008/07/22 21:41:13 andreas_kupries Exp $ + * RCS: @(#) $Id: tclExecute.c,v 1.369.2.3 2008/07/29 13:51:11 msofer Exp $ */ #include "tclInt.h" @@ -915,6 +915,7 @@ GrowEvaluationStack( int newBytes, newElems, currElems; int needed = growth - (esPtr->endPtr - esPtr->tosPtr); Tcl_Obj **markerPtr = esPtr->markerPtr, **memStart; + int moveWords = 0; if (move) { if (!markerPtr) { @@ -949,9 +950,9 @@ GrowEvaluationStack( */ if (move) { - move = esPtr->tosPtr - MEMSTART(markerPtr) + 1; + moveWords = esPtr->tosPtr - MEMSTART(markerPtr) + 1; } - needed = growth + move + WALLOCALIGN - 1; + needed = growth + moveWords + WALLOCALIGN - 1; /* * Check if there is enough room in the next stack (if there is one, it @@ -1011,8 +1012,8 @@ GrowEvaluationStack( esPtr->tosPtr = memStart - 1; if (move) { - memcpy(memStart, MEMSTART(markerPtr), move*sizeof(Tcl_Obj *)); - esPtr->tosPtr += move; + memcpy(memStart, MEMSTART(markerPtr), moveWords*sizeof(Tcl_Obj *)); + esPtr->tosPtr += moveWords; oldPtr->markerPtr = (Tcl_Obj **) *markerPtr; oldPtr->tosPtr = markerPtr-1; } |