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setjmp: optimize x86 longjmp epilogues
[musl]
/
src
/
stdio
/
__stdio_write.c
diff --git
a/src/stdio/__stdio_write.c
b/src/stdio/__stdio_write.c
index
63d9c85
..
d2d8947
100644
(file)
--- a/
src/stdio/__stdio_write.c
+++ b/
src/stdio/__stdio_write.c
@@
-1,4
+1,5
@@
#include "stdio_impl.h"
#include "stdio_impl.h"
+#include <sys/uio.h>
size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
{
size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
{
@@
-10,10
+11,13
@@
size_t __stdio_write(FILE *f, const unsigned char *buf, size_t len)
size_t rem = iov[0].iov_len + iov[1].iov_len;
int iovcnt = 2;
ssize_t cnt;
size_t rem = iov[0].iov_len + iov[1].iov_len;
int iovcnt = 2;
ssize_t cnt;
- f->wpos = f->wbase;
for (;;) {
cnt = syscall(SYS_writev, f->fd, iov, iovcnt);
for (;;) {
cnt = syscall(SYS_writev, f->fd, iov, iovcnt);
- if (cnt == rem) return len;
+ if (cnt == rem) {
+ f->wend = f->buf + f->buf_size;
+ f->wpos = f->wbase = f->buf;
+ return len;
+ }
if (cnt < 0) {
f->wpos = f->wbase = f->wend = 0;
f->flags |= F_ERR;
if (cnt < 0) {
f->wpos = f->wbase = f->wend = 0;
f->flags |= F_ERR;