[Tcl-bugs] [ tcl-Bugs-753315 ] mt-safety issue in filesystem record list

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Bugs item #753315, was opened at 2003-06-12 06:30
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Category: 35. Pathname Management
Group: 8.4.3
Status: Open
Resolution: None
Priority: 7
Submitted By: Zoran Vasiljevic (vasiljevic)
Assigned to: Vince Darley (vincentdarley)
Summary: mt-safety issue in filesystem record list

Initial Comment:
There is a new MT-safety bug appearing in the 
tclIOUtil.c code. The problem is the shared list of
filesystem records. Pointers from this list are being
referenced in each path internal rep in every
Tcl path object. Now, when objects are getting
destroyed, they decrement refcount of the *shared*
record. This happens w/o mutex protection, leading to
memory corruptions. Especially on MP machines, this
comes out pretty soon, i.e. the process cores.


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