| Ticket UUID: | 1964803 | |||
| Title: | crash with tcl_traceExec and format strings | |||
| Type: | Bug | Version: | obsolete: 8.5.2 | |
| Submitter: | ajpasadyn | Created on: | 2008-05-15 19:34:40 | |
| Subsystem: | 47. Bytecode Compiler | Assigned To: | msofer | |
| Priority: | 9 Immediate | Severity: | ||
| Status: | Closed | Last Modified: | 2008-05-16 21:40:00 | |
| Resolution: | Fixed | Closed By: | msofer | |
| Closed on: | 2008-05-16 14:40:00 | |||
| Description: |
I'm using the exec trace to try to track down what the interpreter is doing when I encounter a Tcl_Panic in 8.5.2, and I got a crash in the trace itself.
% set tcl_traceExec 3
3
% set fmt "%s%s"
Executing ByteCode 0x00BF96B0, refCt 2, epoch 3, interp 0x00A3CB68 (epoch 3)
Source: "history add {set fmt \" 4??vQg*?(null)\"}"
Cmds 1, src 28, inst 9, litObjs 3, aux 0, stkDepth 3, code/src 0.00
Starting stack top=0
1: 0 (0) push1 0 # "history"
1: 1 (0) push1 0 => "history"
1: 1 (2) push1 1 # "add"
1: 2 (2) push1 1 => "add"
1: 2 (4) push1 2 # "set fmt \"%s%s\""
1: 3 (4) push1 2 =>
It's passing an unknown string to fprintf without a format string. I attached a patch I'm using to get past it.
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| User Comments: |
msofer added on 2008-05-16 21:39:59:
Logged In: YES user_id=148712 Originator: NO Good catch, good fix: committed. Thanks! ajpasadyn added on 2008-05-16 02:34:40: File Added - 277927: tclCompile.patch | |||
Attachments:
- tclCompile.patch [download] added by ajpasadyn on 2008-05-16 02:34:40. [details]