diff options
Diffstat (limited to 'generic')
| -rw-r--r-- | generic/tclIO.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c index adea32e..58c7b3c 100644 --- a/generic/tclIO.c +++ b/generic/tclIO.c @@ -1747,6 +1747,10 @@ Tcl_StackChannel( statePtr->csPtrR = NULL; statePtr->csPtrW = NULL; + /* + * TODO: Examine what can go wrong if Tcl_Flush() call disturbs + * the stacking state of this channel during its operations. + */ if (Tcl_Flush((Tcl_Channel) prevChanPtr) != TCL_OK) { statePtr->csPtrR = csPtrR; statePtr->csPtrW = csPtrW; @@ -9786,12 +9790,15 @@ StackSetBlockMode( { int result = 0; Tcl_DriverBlockModeProc *blockModeProc; + ChannelState *statePtr = chanPtr->state; /* * Start at the top of the channel stack + * TODO: Examine what can go wrong when blockModeProc calls + * disturb the stacking state of the channel. */ - chanPtr = chanPtr->state->topChanPtr; + chanPtr = statePtr->topChanPtr; while (chanPtr != NULL) { blockModeProc = Tcl_ChannelBlockModeProc(chanPtr->typePtr); if (blockModeProc != NULL) { |