Mat73 file handle release on Mat_VarRead()

[cstaub]

Hi,

I'm facing an issue when reading matlab files of version 7.3 with Mat_VarRead(...). Although the file is closed, it cannot be deleted as the process still keeps a reference to the file. Simply calling Mat_VarReadInfo() works fine.

Example:

mat_t* matfp = Mat_Open("C:/temp/test/matlab.mat", MAT_ACC_RDONLY);

// matvar_t* matvar = Mat_VarReadInfo(matfp, "Name"); // -> works fine, file handle is released
matvar_t* matvar = Mat_VarRead(matfp, "name"); // -> fails -> file handle not released after Mat_Close()

Mat_VarPrint(matvar, 1);

Mat_VarFree(matvar);
Mat_Close(matfp);

Environment is windows 7, 64bit, visual studio 2012, hdf4-lib version 1.10.0-patch1. No issues when using matlab v4.0 format.

Can you please investigate and confirm. Thank you for your support.
cstaub

[tbeu]

Does it happen with any MAT file of vs 7.3? Can you provide your test file?

[cstaub]

No, the issue seems to be related to files written with matio. When reading files that have been previously written using matlab, the handle is released. Please find an example file attached, which in my case keeps the file handle open.

ReadWriteArray.zip

[tbeu]

Thanks. Can reproduce the issue.

[tbeu]

Resolved by 38f50fd.