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| author | dkf <donal.k.fellows@manchester.ac.uk> | 2007-09-20 22:59:40 (GMT) |
|---|---|---|
| committer | dkf <donal.k.fellows@manchester.ac.uk> | 2007-09-20 22:59:40 (GMT) |
| commit | 468499bdecc1465a84240284ade36429012147e8 (patch) | |
| tree | c03418956b7682e229796f5a2de8d36f866b4b8f /generic | |
| parent | e00b3f658a46280b2a4e638171b8d64100182385 (diff) | |
| download | tk-468499bdecc1465a84240284ade36429012147e8.zip tk-468499bdecc1465a84240284ade36429012147e8.tar.gz tk-468499bdecc1465a84240284ade36429012147e8.tar.bz2 | |
Only call callbacks that are not NULL. [Bug 1791052]
Diffstat (limited to 'generic')
| -rw-r--r-- | generic/tkTextDisp.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/generic/tkTextDisp.c b/generic/tkTextDisp.c index d5d827d..7e43bf1 100644 --- a/generic/tkTextDisp.c +++ b/generic/tkTextDisp.c @@ -12,7 +12,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkTextDisp.c,v 1.65 2007/09/07 00:34:54 dgp Exp $ + * RCS: @(#) $Id: tkTextDisp.c,v 1.66 2007/09/20 22:59:40 dkf Exp $ */ #include "tkInt.h" @@ -1551,6 +1551,7 @@ LayoutDLine( */ TkTextLine *linePtr = TkBTreeNextLine(NULL, curIndex.linePtr); + if (linePtr != NULL) { dlPtr->logicalLinesMerged++; curIndex.byteIndex = 0; @@ -1609,11 +1610,15 @@ LayoutDLine( } FreeStyle(textPtr, chunkPtr->stylePtr); breakChunkPtr->nextPtr = chunkPtr->nextPtr; - (*chunkPtr->undisplayProc)(textPtr, chunkPtr); + if (chunkPtr->undisplayProc != NULL) { + (*chunkPtr->undisplayProc)(textPtr, chunkPtr); + } ckfree((char *) chunkPtr); } if (breakByteOffset != breakChunkPtr->numBytes) { - (*breakChunkPtr->undisplayProc)(textPtr, breakChunkPtr); + if (breakChunkPtr->undisplayProc != NULL) { + (*breakChunkPtr->undisplayProc)(textPtr, breakChunkPtr); + } segPtr = TkTextIndexToSeg(&breakIndex, &byteOffset); (*segPtr->typePtr->layoutProc)(textPtr, &breakIndex, segPtr, byteOffset, maxX, breakByteOffset, 0, |