[Nexus] Memory leak in NeXus 3.0.0 API

[POIRIER Stephane]

Hello all!

Using the NeXus API 3.0.0 and HDF5 (v1.6.5) under GNU/Linux, I have noticed a memory leak in my process recording data in NeXus format. Then I tryed to see what's going wrong with Valgrind, a memory debugging tool.
In the listing produced by Valgrind (after a 3 hours test) I read :

==15497== 264256 bytes in 4129 blocks are definitely lost in loss record 185 of 185
==15497==    at 0x3414A23C: malloc (vg_replace_malloc.c:131)
==15497==    by 0x80CB15B: NXIformatNeXusTime (napi.c:1017)
==15497==    by 0x80CB704: NX5open (napi5.c:146)
==15497==    by 0x80CA589: nxiopen_ (napi.c:232)

Looking at the NX5open function in napi5.c I saw that the pointer named 'time_buffer' is allays allocated (using NXIformatNeXusTime()) when calling NX5open but freed only in the case of a NXACC_CREATE5 access (=> H5F_ACC_TRUNC) to the NeXus file.

Thanks,

Stephane

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Stéphane POIRIER
Groupe Gestion des données
Tél. : 01 69 35 93 38
SYNCHROTRON SOLEIL
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