c-capnproto/compiler/str.h
Joel Carlson 9053ebe6ee compiler/str.h: include stdarg.h for va_list
With some toolchains, compilation of str.c produced the following error:

compiler/str.h:56:50: error: unknown type name ‘va_list’
 int str_vaddf(struct str *v, const char *format, va_list ap) ATTR(2,0);
                                                  ^~~~~~~

One toolchain had the following in its stdarg.h:
"We deliberately do not define va_list when called from
stdio.h, because ANSI C says that stdio.h is not supposed to
define va_list."

str.c includes stdio.h, but none of the prior includes result in the
inclusion of stdarg.h. Therefore, explicitly include it in str.h to fix
the issue on toolchains following this ANSI C rule.

Signed-off-by: Joel Carlson <JoelsonCarl@gmail.com>
2019-04-22 20:58:49 +01:00

61 lines
1.2 KiB
C

/* vim: set sw=8 ts=8 sts=8 noet: */
/* str.h
*
* Copyright (C) 2013 James McKaskill
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
#include <capnp_c.h>
#include <stdlib.h>
#include <stdarg.h>
struct str {
char *str;
int len, cap;
};
extern char str_static[];
#define STR_INIT {str_static, 0, 0}
void str_reserve(struct str *v, int sz);
static inline void str_init(struct str *v, int sz) {
v->str = str_static;
v->len = v->cap = 0;
if (sz)
str_reserve(v, sz);
}
static inline void str_release(struct str *v) {
if (v->cap) {
free(v->str);
}
}
static inline void str_reset(struct str *v) {
if (v->len) {
v->len = 0;
v->str[0] = '\0';
}
}
static inline void str_setlen(struct str *v, int sz) {
str_reserve(v, sz);
v->str[sz] = '\0';
v->len = sz;
}
#ifdef __GNUC__
#define ATTR(FMT, ARGS) __attribute__((format(printf,FMT,ARGS)))
#else
#define ATTR(FMT, ARGS)
#endif
void str_add(struct str *v, const char *str, int sz);
int str_vaddf(struct str *v, const char *format, va_list ap) ATTR(2,0);
int str_addf(struct str *v, const char *format, ...) ATTR(2,3);
char *strf(struct str *v, const char *format, ...) ATTR(2,3);