[Tcl-bugs] [ tcl-Bugs-3091701 ] TclAppendBytesToByteArray infinite loop

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Bugs item #3091701, was opened at 2010-10-21 02:45
Message generated for change (Settings changed) made by andygoth
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Category: 12. ByteArray Object
>Group: development: 8.6b1.1
Status: Open
Resolution: None
>Priority: 9
Private: No
Submitted By: Andy Goth (andygoth)
Assigned to: Donal K. Fellows (dkf)
Summary: TclAppendBytesToByteArray infinite loop

Initial Comment:
	attempt = byteArrayPtr->allocated;
	do {
	    attempt *= 2;
	} while (attempt < used+len);

This code in TclAppendBytesToByteArray loops forever when byteArrayPtr->allocated is initially zero.  This explains the lock-up dzach reported on http://wiki.tcl.tk/23626 .  I have reproduced the problem and used gdb to track it down to these few lines.  The procedure is as dzach said on the Wiki (POST from MSIE8), and his "set chunk {}" workaround also works for me.

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You can respond by visiting: 
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