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SoCoder -> Snippet Home -> Misc |
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HoboBen
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Better C error handling with goto and macros |
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I use gotos for error handling in C. (yes this is a valid use for gotos). It allows me to jump to any point in cleanup section. For a good example, see StackOverflow: stackoverflow.com/questions/788903/valid-use-of-goto-for-error-management-in-c It just occurred to me that I could throw in a macro and automatically get pretty error messages for every error handled, no extra work. It gives me nice output like: ced: ../src/canvas.c:183 OpenCanvas: Exception 'err_already_open' at line 183 Here's an example that checks for valid arguments, allocates some memory, and at any point can unwind from an error. Just include this somewhere: |
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