Fix segfault by calling ftell in place of tell_off #1217
Merged
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sox_format_t.tell_offshould be representing current offset in file, but there are cases it does not. This was causing segmentation fault in some cases. This PR fixes it by replacing it withftellcall and add extra check so that if the same thing should happen, it will throw runtime error instead of segmentation fault.See also: internal test log