Fix clang 15 -Wstrict-prototypes warnings
As of https://github.com/llvm/llvm-project/commit/11da1b53d8c, clang 15
has started warning about functions which take no arguments, but are
declared or defined using "()" instead of "(void)". See also [1].
At first this was even an error by default, but before clang 15 was
released, it was again downgraded to a warning. Since scdoc builds
with both "-std=c99 -pedantic" and "-Wall -Wextra -Werror", this leads
to two compile errors:
include/str.h:10:23: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
struct str *str_create();
^
void
src/string.c:15:23: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
struct str *str_create() {
^
void
To fix this, use "(void)" for both the declaration and definition of the
str_create function.
[1] https://discourse.llvm.org/t/rfc-enabling-wstrict-prototypes-by-default-in-c/60521
#ifndef _SCDOC_STRING_H
#define _SCDOC_STRING_H
#include <stdint.h>
struct str {
char *str;
size_t len, size;
};
struct str *str_create();
struct str *str_create(void);
void str_free(struct str *str); void str_reset(struct str *str); int str_append_ch(struct str *str, uint32_t ch); #endif
#include <stdlib.h>
#include <stdint.h>
#include "str.h"
#include "unicode.h"
#include "util.h"
static void ensure_capacity(struct str *str, size_t len) {
if (len + 1 >= str->size) {
char *new = xrealloc(str->str, str->size * 2);
str->str = new;
str->size *= 2;
}
}
struct str *str_create() {
struct str *str_create(void) {
struct str *str = xcalloc(1, sizeof(struct str));
str->str = xcalloc(16, 1);
str->size = 16;
str->len = 0;
str->str[0] = '\0';
return str;
}
void str_free(struct str *str) {
if (!str) return;
free(str->str);
free(str);
}
int str_append_ch(struct str *str, uint32_t ch) {
int size = utf8_chsize(ch);
if (size <= 0) {
return -1;
}
ensure_capacity(str, str->len + size);
utf8_encode(&str->str[str->len], ch);
str->len += size;
str->str[str->len] = '\0';
return size;
}