SIGSEGV: Illegal storage access. (Attempt to read from nil?) about c2nim HOT 4 OPEN

Hmm, GitHub doesn't allow me to attach the notmuch.h file for your convenience --- or I am too dumb. So I uploaded it to 0x0.st instead. Here is the link: http://0x0.st/o-If.h

The weird filename is from the pastebin site 0x0.st, not from me.

from c2nim.

I'm getting the same issue but seems to only happen when running on a header in a directory owned by root eg all the headers in /usr/include.

Seems to be an issue with c2nim trying to create the output in a directory owned by root. Running c2nim with a copy of the header in a directory owned by my local user or specifying --out:output.nim seems to work.

I guess there's missing error check when opening the output file which causes the seg fault. Would be better to exit with a useful error instead.

from c2nim.

I am facing this problem with the header in a directory not owned by root. In my case, it occurs with file:
https://github.com/FFmpeg/FFmpeg/blob/release/6.1/libavformat/avformat.h

I use ffmpeg.c2nim:

#ifdef C2NIM
#def av_const
#def av_always_inline 
#def av_pure
#pp AV_HAVE_BIGENDIAN
#def attribute_deprecated
#def av_warn_unused_result
#def AV_PIX_FMT_NE

#endif
#def FF_API_R_FRAME_RATE TRUE
#ifdef C2NIM
#@
template AV_PIX_FMT_NE*(be, le: untyped):untyped  =
  `AV_PIX_FMT le`
@#
#endif

If I use the following command:

c2nim --strict  --skipinclude --dynlib:libavformat --header --skipcomments --out:avformat/avformat.nim ffmpeg.c2nim ../FFmpeg-release-6.1/libavformat/avformat.h

it complains about line 2831:

FFmpeg-release-6.1/libavformat/avformat.h(2831, 1) Error: did not expect #

If execute the same line without --strict:

[warning] preprocessor ignoring option: endif
SIGSEGV: Illegal storage access. (Attempt to read from nil?)
[1]    4858 segmentation fault (core dumped)  c2nim --skipinclude --dynlib:libavformat --header --skipcomments  ffmpeg.c2ni

from c2nim.

In my case, it looks like the issue is related with trying to create output file in an unexisting folder.

So by just doing:

mkdir avformat

the problem was solved.

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