diff options
Diffstat (limited to 'generic/tclIO.c')
-rw-r--r-- | generic/tclIO.c | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c index edccf41..0a81a53 100644 --- a/generic/tclIO.c +++ b/generic/tclIO.c @@ -166,6 +166,7 @@ typedef struct CloseCallback { static ChannelBuffer * AllocChannelBuffer(int length); static void PreserveChannelBuffer(ChannelBuffer *bufPtr); static void ReleaseChannelBuffer(ChannelBuffer *bufPtr); +static int IsShared(ChannelBuffer *bufPtr); static void ChannelTimerProc(ClientData clientData); static int CheckChannelErrors(ChannelState *statePtr, int direction); @@ -2312,6 +2313,13 @@ ReleaseChannelBuffer( } ckfree(bufPtr); } + +static int +IsShared( + ChannelBuffer *bufPtr) +{ + return bufPtr->refCount > 1; +} /* *---------------------------------------------------------------------- @@ -2342,6 +2350,9 @@ RecycleBuffer( /* * Do we have to free the buffer to the OS? */ + if (IsShared(bufPtr)) { + mustDiscard = 1; + } if (mustDiscard) { ReleaseChannelBuffer(bufPtr); @@ -3204,7 +3215,8 @@ Tcl_Close( stickyError = 0; - if ((statePtr->encoding != NULL) && (statePtr->curOutPtr != NULL) + if ((statePtr->encoding != NULL) + && !(statePtr->outputEncodingFlags & TCL_ENCODING_START) && (CheckChannelErrors(statePtr, TCL_WRITABLE) == 0)) { statePtr->outputEncodingFlags |= TCL_ENCODING_END; if (WriteChars(chanPtr, "", 0) < 0) { @@ -4574,12 +4586,12 @@ Tcl_GetsObj( chanPtr = statePtr->topChanPtr; */ bufPtr = statePtr->inQueueHead; - if (bufPtr == NULL) { - Tcl_Panic("Tcl_GetsObj: restore reached with bufPtr==NULL"); + if (bufPtr != NULL) { + bufPtr->nextRemoved = oldRemoved; + bufPtr = bufPtr->nextPtr; } - bufPtr->nextRemoved = oldRemoved; - for (bufPtr = bufPtr->nextPtr; bufPtr != NULL; bufPtr = bufPtr->nextPtr) { + for ( ; bufPtr != NULL; bufPtr = bufPtr->nextPtr) { bufPtr->nextRemoved = BUFFER_PADDING; } CommonGetsCleanup(chanPtr); @@ -4720,6 +4732,9 @@ TclGetsObjBinary( goto restore; } bufPtr = statePtr->inQueueTail; + if (bufPtr == NULL) { + goto restore; + } } dst = (unsigned char *) RemovePoint(bufPtr); @@ -4832,12 +4847,12 @@ TclGetsObjBinary( restore: bufPtr = statePtr->inQueueHead; - if (bufPtr == NULL) { - Tcl_Panic("TclGetsObjBinary: restore reached with bufPtr==NULL"); + if (bufPtr) { + bufPtr->nextRemoved = oldRemoved; + bufPtr = bufPtr->nextPtr; } - bufPtr->nextRemoved = oldRemoved; - for (bufPtr = bufPtr->nextPtr; bufPtr != NULL; bufPtr = bufPtr->nextPtr) { + for ( ; bufPtr != NULL; bufPtr = bufPtr->nextPtr) { bufPtr->nextRemoved = BUFFER_PADDING; } CommonGetsCleanup(chanPtr); @@ -4992,6 +5007,11 @@ FilterInputBytes( } bufPtr = statePtr->inQueueTail; gsPtr->bufPtr = bufPtr; + if (bufPtr == NULL) { + gsPtr->charsWrote = 0; + gsPtr->rawRead = 0; + return -1; + } } /* @@ -7663,7 +7683,8 @@ Tcl_SetChannelOption( * iso2022, the terminated escape sequence must write to the buffer. */ - if ((statePtr->encoding != NULL) && (statePtr->curOutPtr != NULL) + if ((statePtr->encoding != NULL) + && !(statePtr->outputEncodingFlags & TCL_ENCODING_START) && (CheckChannelErrors(statePtr, TCL_WRITABLE) == 0)) { statePtr->outputEncodingFlags |= TCL_ENCODING_END; WriteChars(chanPtr, "", 0); |