Tcl Source Code

When using Tcl_FSStat(someTcl_Obj, &statBuf) in a Tcl
extension compiled with MinGW, loading the extension in
a stock ActiveTcl tclsh, the file sizes that are in the
statBuf.size field are plain wrong.

Attached, you find the code for an extension
(filesize.c -> filesize.dll) defining a new Tcl command
[filesize]. The results from that command compared to
the regular [file size] command are:

ActiveTcl8.4.12 tclsh.exe

=========================

% load filesize.dll

% filesize filesize.dll

1000                       <== wrong value

% file size filesize.dll

13933



As an alternative to the code in filesize.c, which has
the memory for statBuf allocated automatically, I used
Tcl_AllocStatBuf() to allocate the memory dynamically.
This did not make a difference.

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I believe this is an extension configuration issue.  You have to be careful to get the same stat buf size.  This is a weak link in extension building for extensions that deal with file handling.

File Added - 178896: filesize.c