ld-discmap eating .pcm files

[Gamnn]

When I run ld-discmap I get the following, then the 317.5 MB input pcm file is overwritten with a 0 byte file.

ld-discmap r.tbc r.mapped.tbc -d
Debug: Version - Git branch: master / commit: b698e59
Info: LaserDisc mapping tool
Info: 
Info: Please note that disc mapping is not fool-proof - if you
Info: have a disc that does not map correctly run ld-discmap
Info: with the --debug option for more details about the process
Info: (and the additional information required for issue reporting
Info: to the ld-decode project).
Info: 
Info: Some early LaserDiscs do not provide frame numbering or
Info: time-code information and cannot be automatically mapped -
Info: if in doubt verify your source TBC file using the ld-analyse
Info: application.
Info: 
Info: Note that NTSC CAV pulldown support currently only handles
Info: discs that follow the standard 1-in-5 pulldown pattern.
Info: 
Info: Processing input metadata for r.tbc
Debug: LdDecodeMetaData::read(): Loading JSON file "r.tbc.json"
Debug: Checking first 100 sequential frames for disc CAV/CLV type determination
Debug: Got 100 valid CAV picture numbers from 100 frames - source disc type is CAV
Debug: Storing VBI CAV picture numbers as frame numbers
Debug: Disc type is NTSC CAV - checking for pull-down frames
Debug: Performing a frame quality analysis for each frame
Debug: DiscMap(Frames 53941, disc type is CAV, video format is NTSC, detected 0 pulldown frames)
Info: Input TBC is CAV NTSC
Info: Checking for lead in and out frames...
Info: Removing 1 frames marked as lead in/out
Info: Removing invalid frames by phase analysis...
Info: Removing 0 frames marked as invalid due to incorrect phase sequence
Info: Correcting frame numbers using sequence analysis...
Info: Sequence analysis corrected 0 frame numbers
Info: Searching for duplicate frames
Debug: Building list of VBIs that have more than one entry in the discmap...
Debug: Sorting the duplicated frame list into numerical order...
Debug: Removing any repeated frame numbers from the duplicated frame list...
Debug: Found 0 VBI frame numbers with more than 1 entry in the discmap
Info: Removed 0 duplicate frames - disc map size now 53940 frames
Info: Numbering pulldown frames in the disc map...
Info: Numbering complete
Info: Verifying frame numbers are present for all frames in the disc map...
Info: Verification successful
Info: Sorting the disc map into numerical frame order...
Info: Sorting complete
Info: Looking for sequence gaps to pad in the disc map...
Info: No gaps found in the disc map
Info: After padding the disc map contains 53940 frames
Info: Searching disc map for pulldown frames...
Info: Search complete; no pulldown frames present
Info: Disc mapping process completed
Info: Writing output video and metadata information...
Debug: SourceVideo::open(): Called with field byte length = 478660
Debug: SourceVideo::open(): Successful - 107882 fields available
Debug: Opening audio source metadata for sample analysis...
Debug: LdDecodeMetaData::read(): Loading JSON file "r.tbc.json"
Debug: Opened audio source; processing field sample lengths...
Info: Saving target video frames...
Fatal: Could not get enough input bytes from input audio file
Aborted (core dumped)

[simoninns]

Fixed in latest commit. There was an error with the filename forming code. I also added an additional check to ensure the target audio file doesn't exist before overwriting.