#276 'gain -n' causes SoX v14.4.2 to not delete tmp file

[Selur]

using:

ffmpeg -y -threads 8 -loglevel fatal -i "H:\Output\iId_1_aid_1_DELAY_-53ms_17_50_53_5810_01.ac3" -ac 6 -ar 48000 -f sox - | sox --ignore-length --temp "H:\Temp" --buffer 524288 -S -t sox - -t wav h:\test.wav gain -n

the tmp file (libSoX.tmp.P1kAlM) used by sox doesn't get delete
when using:

ffmpeg -y -threads 8 -loglevel fatal -i "H:\Output\iId_1_aid_1_DELAY_-53ms_17_50_53_5810_01.ac3" -ac 6 -ar 48000 -f sox - | sox --ignore-length --temp "H:\Temp" --buffer 524288 -S -t sox - -t wav h:\test.wav gain -n

no temp file is deleted, running normalle multiple conversion calls in parallel I don't really know which sox instance created which tmp file, so manually deleting them isn't really an option.

adding -V -V to the call I get:

ffmpeg -y -threads 8 -loglevel fatal -i "H:\Output\iId_1_aid_1_DELAY_-53ms_17_50_53_5810_01.ac3" -ac 6 -ar 48000 -f sox - | sox -V -V --ignore-length --temp "H:\Temp" --buffer 524288 -S -t sox - -t wav h:\test.wav gain -n
sox:      SoX v14.4.2
time:     May 25 2016 08:58:44
compiler: gcc 5.3.0
arch:     1248 48 88 L OMP

Input File     : '-' (sox)
Channels       : 6
Sample Rate    : 48000
Precision      : 32-bit
Sample Encoding: 32-bit Signed Integer PCM
Endian Type    : little
Reverse Nibbles: no
Reverse Bits   : no

sox INFO sox: Overwriting `h:\test.wav'
sox DBUG wav: Writing Wave file: Microsoft PCM format, 6 channels, 48000 samp/sec
sox DBUG wav:         1152000 byte/sec, 24 block align, 32 bits/samp

Output File    : 'h:\test.wav'
Channels       : 6
Sample Rate    : 48000
Precision      : 32-bit
Sample Encoding: 32-bit Signed Integer PCM
Endian Type    : little
Reverse Nibbles: no
Reverse Bits   : no
Comment        : 'Processed by SoX'

sox DBUG libsox_i: mkstemp, name=H:\Temp/libSoX.tmp.P1kAlM (unlinked)
sox INFO sox: effects chain: input      48000Hz  6 channels (multi) 32 bits unknown length
sox INFO sox: effects chain: gain       48000Hz  6 channels         32 bits unknown length
sox INFO sox: effects chain: output     48000Hz  6 channels (multi) 32 bits unknown length
sox DBUG sox: start-up time = 0.050035
In:0.00% 00:00:33.38 [00:00:00.00] Out:1.60M [-=====|====- ] Hd:0.1 Clip:0
Done.
sox DBUG wav: Finished writing Wave file, 38449152 data bytes 1602048 samples

alternatively if one could name the temp file (not just the temp folder) I could identify the tmp file and delete it manually.

Would be nice if someone could look into this.

[Mans Rullgard]

Windows doesn't allow deleting open files. To fix this, we'll have to keep track of all temp files created and delete from a cleanup function just before exit.