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3b390b754e
Actually, I don't even think it means that. But rename it to something which is sane. Thanks to David Gibson for reporting. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit e764d0a27d2b6748ea7d343042ec7d6dda1f6aae)
65 lines
1.5 KiB
Plaintext
65 lines
1.5 KiB
Plaintext
#include <string.h>
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#include <stdio.h>
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#include "config.h"
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/**
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* compiler - macros for common compiler extensions
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*
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* Abstracts away some compiler hints. Currently these include:
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* - COLD
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* For functions not called in fast paths (aka. cold functions)
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* - PRINTF_FMT
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* For functions which take printf-style parameters.
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* - CONST_FUNCTION
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* For functions which return the same value for same parameters.
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* - NEEDED
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* For functions and variables which must be emitted even if unused.
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* - UNNEEDED
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* For functions and variables which need not be emitted if unused.
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* - UNUSED
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* For parameters which are not used.
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* - IS_COMPILE_CONSTANT()
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* For using different tradeoffs for compiletime vs runtime evaluation.
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*
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* License: Public Domain
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* Author: Rusty Russell <rusty@rustcorp.com.au>
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*
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* Example:
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* #include <ccan/compiler/compiler.h>
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* #include <stdio.h>
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* #include <stdarg.h>
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*
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* // Example of a (slow-path) logging function.
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* static int log_threshold = 2;
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* static void COLD PRINTF_FMT(2,3)
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* logger(int level, const char *fmt, ...)
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* {
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* va_list ap;
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* va_start(ap, fmt);
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* if (level >= log_threshold)
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* vfprintf(stderr, fmt, ap);
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* va_end(ap);
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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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* if (argc != 1) {
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* logger(3, "Don't want %i arguments!\n", argc-1);
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* return 1;
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* }
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* return 0;
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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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/* Expect exactly one argument */
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if (argc != 2)
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return 1;
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if (strcmp(argv[1], "depends") == 0) {
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return 0;
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}
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return 1;
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}
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