[Tcl-bugs] [ tcl-Bugs-1867855 ] segv: format {%llx} 0

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Bugs item #1867855, was opened at 2008-01-09 14:09
Message generated for change (Comment added) made by dgp
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Category: 10. Objects
Group: current: 8.5.0
>Status: Closed
>Resolution: Fixed
Priority: 9
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Don Porter (dgp)
Summary: segv: format {%llx} 0

Initial Comment:
This is on an Ubuntu (gutsy) system using the binary
ActiveTcl 8.5.0 installation.

bash$ uname -a
Linux rvml 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux

bash$ /opt/ActiveTcl-8.5/bin/tclsh8.5
% info patchlevel
8.5.0
% format {%llx} 1
1
% format {%llx} 0
Segmentation fault (core dumped)






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>Comment By: Don Porter (dgp)
Date: 2008-01-10 11:09

Message:
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Fixed in HEAD

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Comment By: Don Porter (dgp)
Date: 2008-01-09 16:55

Message:
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Program received signal SIGSEGV, Segmentation fault.
0x0808d2ba in Tcl_AppendFormatToObj (interp=0x8f968d0,
appendObj=0x8fac598,
    format=0x8fc505c "", objc=1, objv=0x8f96f74)
    at /home/dgp/cvs/tcl/unix/../generic/tclStringObj.c:2153
2153                            bytes[numDigits] = '0' + digitOffset;
(gdb) bt
#0  0x0808d2ba in Tcl_AppendFormatToObj (interp=0x8f968d0,
    appendObj=0x8fac598, format=0x8fc505c "", objc=1, objv=0x8f96f74)
    at /home/dgp/cvs/tcl/unix/../generic/tclStringObj.c:2153
#1  0x0808d865 in Tcl_Format (interp=0x8f968d0, format=0x8fc5058 "%llx",
    objc=1, objv=0x8f96f74)
    at /home/dgp/cvs/tcl/unix/../generic/tclStringObj.c:2309
...
(gdb) print numDigits
$2 = -35109


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Comment By: Jeffrey Hobbs (hobbs)
Date: 2008-01-09 15:15

Message:
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Originator: NO

Happens on Linux-2.4 and Windows as well.

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