fix: allow opening non-existent file for writing#195
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The fopen mode string r+b will not actually create new files if they don't exist so should use w+b (keep support for r+b in the case of existing files though to prevent truncation; useful for possible streamed writing). This wasn't caught by the tests because `get_temp_file_path` already always tries to create a dirent for the temp file before returning it.
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The fopen mode string r+b will not actually create new files if they don't exist so should use w+b (keep support for r+b in the case of existing files though to prevent truncation; useful for possible streamed writing).
This wasn't caught by the tests because
get_temp_file_pathalready always tries to create a dirent for the temp file before returning it.CC @braingram