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lib: make buf arg const in write_fd pointer

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For capn_write_fd() the write() function would be ideal to pass as
write_fd, but write() has type ssize_t (*)(int, const void *, size_t),
whereas write_fd expects ssize_t (*)(int, void *, size_t). Passing
write() directly with GCC 5.4 causes a warning
-Wincompatible-pointer-types (on by default).
This commit is contained in:
Theo Hill 2016-08-06 17:42:19 -07:00
parent 75f79010f6
commit 7b7346a73c
2 changed files with 3 additions and 3 deletions
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4
lib/capn-malloc.c
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@ -304,7 +304,7 @@ capn_write_mem(struct capn *c, uint8_t *p, size_t sz, int packed)
return headersz+datasz;
}
static int _write_fd(ssize_t (*write_fd)(int fd, void *p, size_t count), int fd, void *p, size_t count)
static int _write_fd(ssize_t (*write_fd)(int fd, const void *p, size_t count), int fd, void *p, size_t count)
{
ssize_t ret;
size_t sent = 0;
@ -323,7 +323,7 @@ static int _write_fd(ssize_t (*write_fd)(int fd, void *p, size_t count), int fd,
return 0;
}
int capn_write_fd(struct capn *c, ssize_t (*write_fd)(int fd, void *p, size_t count), int fd, int packed)
int capn_write_fd(struct capn *c, ssize_t (*write_fd)(int fd, const void *p, size_t count), int fd, int packed)
{
unsigned char buf[4096];
struct capn_segment *seg;