1.2.1 Error-handling ¶

Various kinds of errors are possible when using the API, such as mismatched types in an assignment. You can only compile and get code from a context if no errors occur.

Errors are printed on stderr; they typically contain the name of the API entrypoint where the error occurred, and pertinent information on the problem:

./buggy-program: error: gcc_jit_block_add_assignment: mismatching types: assignment to i (type: int) from "hello world" (type: const char *)

The API is designed to cope with errors without crashing, so you can get away with having a single error-handling check in your code:

void *fn_ptr = gcc_jit_result_get_code (result, "square");
if (!fn_ptr)
  {
    fprintf (stderr, "NULL fn_ptr");
    goto error;
  }

For more information, see the error-handling guide within the Topic eference.