[Python-Dev] bsddb3 imported (original) (raw)

Tim Peters tim.one@comcast.net
Sat, 23 Nov 2002 13:26:06 -0500

[Tim]

Not here. In a debug build, it [testucn] reliably crashes in the bowels of strcpy. My guess:

strcpy(buffer, hangulsyllables[L][0]); can't always work because the hangulsyllables array contains NULL pointers in some entries instead of empty strings. It blows up for me when L is pointing at the { 0, "YI", "S" }, entry. I'm proceeding on "a fix" to see whether s/0/""/g cures it.

[Martin]

Are you sure you are up-to-date?

I was at the time.

For that to happen, L must be 19.

It was.

Now, L is SIndex / NCount, where NCount is 588. So SIndex must be atleast (588*19 =) 11172 (= SCount). However, SIndex is code-SBase, so code must be at least SBase+SCount. In that case, the entire if statement should not be executed, because the if statement reads

if (SBase <= code && code < SBase+SCount) { It so happens that the fields which are NULL are never accessed.

It was at the time. It would be a stretch to believe I pasted that line in by blind luck -- it's what the debugger was pointing at when the crash occurred, and hangul_syllables[L][0] was NULL at the time. Maybe that's been "fixed" in more than one way by now.