Not sure why you get that particular probem, but:
is twice in your code, and you REALLY do not want to do that - you WILL be writing over the end of your allocated memory with that - you probably should exit out of the app if you can't get the memory to produce the full string.Code:if (line_buff == NULL) { line_buff = temp_buff; }
Another "interesting" point is that you never "recharge" chars_left when you grow the buffer, so perhaps you are really running out of memory when you reach chars_left = 0.
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Mats