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27 lines
589 B
27 lines
589 B
#include <ccan/typesafe_cb/typesafe_cb.h> |
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#include <stdlib.h> |
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void _callback(void (*fn)(void *arg), void *arg); |
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void _callback(void (*fn)(void *arg), void *arg) |
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{ |
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fn(arg); |
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} |
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/* Callback is set up to warn if arg isn't a pointer (since it won't |
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* pass cleanly to _callback's second arg. */ |
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#define callback(fn, arg) \ |
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_callback(typesafe_cb(void, (fn), (arg)), (arg)) |
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void my_callback(int something); |
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void my_callback(int something) |
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{ |
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} |
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int main(int argc, char *argv[]) |
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{ |
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#ifdef FAIL |
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/* This fails due to arg, not due to cast. */ |
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callback(my_callback, 100); |
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#endif |
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return 0; |
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}
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