| Ticket UUID: | 6bdadfba7de3f9a8881e1ca4726f3c7fb8d5da17 | |||
| Title: | Traces crash with multi-lappend | |||
| Type: | Bug | Version: | 8.6 | |
| Submitter: | dkf | Created on: | 2019-06-20 19:40:00 | |
| Subsystem: | 47. Bytecode Compiler | Assigned To: | dkf | |
| Priority: | 9 Immediate | Severity: | Severe | |
| Status: | Closed | Last Modified: | 2023-03-24 21:35:46 | |
| Resolution: | Fixed | Closed By: | pooryorick | |
| Closed on: | 2023-03-24 21:35:46 | |||
| Description: |
(text/html)
This script crashes. It shouldn't.
<pre>
set x 1
lappend x 2 3
set y $x
trace add variable x write {apply {args {error boo}}}
lappend x 4 5
</pre>
| |||
| User Comments: |
pooryorick added on 2023-03-24 21:35:46:
(text/x-fossil-wiki)
This was a simple programming error, not anything related to elaborate refCounting. pooryorick added on 2023-03-21 23:54:36: (text/x-fossil-wiki) Commit [c0778ccb77b7d096] removes the unneeded calls to Tcl_IncrRefCount() and TclDecrRefCount() from the fix. TclPtrSetVarIdx() takes ownership of newValuePtr if its refCount is 0, and either stores or frees it. pooryorick added on 2023-03-21 16:53:51: (text/x-fossil-wiki) Fixed by dkf in [ca4a6f0a9595ac1f]. | |||
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