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-rw-r--r--src/stdio/__overflow.c2
-rw-r--r--src/stdio/__stdio_exit.c4
-rw-r--r--src/stdio/__toread.c2
-rw-r--r--src/stdio/ext2.c7
-rw-r--r--src/stdio/fflush.c6
-rw-r--r--src/stdio/fgetln.c2
-rw-r--r--src/stdio/fgets.c18
-rw-r--r--src/stdio/fgetwc.c2
-rw-r--r--src/stdio/fread.c2
-rw-r--r--src/stdio/fseek.c4
-rw-r--r--src/stdio/ftell.c8
-rw-r--r--src/stdio/getdelim.c9
-rw-r--r--src/stdio/vfwscanf.c2
13 files changed, 39 insertions, 29 deletions
diff --git a/src/stdio/__overflow.c b/src/stdio/__overflow.c
index 3bb37923..e65a594d 100644
--- a/src/stdio/__overflow.c
+++ b/src/stdio/__overflow.c
@@ -4,7 +4,7 @@ int __overflow(FILE *f, int _c)
{
unsigned char c = _c;
if (!f->wend && __towrite(f)) return EOF;
- if (f->wpos < f->wend && c != f->lbf) return *f->wpos++ = c;
+ if (f->wpos != f->wend && c != f->lbf) return *f->wpos++ = c;
if (f->write(f, &c, 1)!=1) return EOF;
return c;
}
diff --git a/src/stdio/__stdio_exit.c b/src/stdio/__stdio_exit.c
index 5741070f..a5e42c67 100644
--- a/src/stdio/__stdio_exit.c
+++ b/src/stdio/__stdio_exit.c
@@ -9,8 +9,8 @@ static void close_file(FILE *f)
{
if (!f) return;
FFINALLOCK(f);
- if (f->wpos > f->wbase) f->write(f, 0, 0);
- if (f->rpos < f->rend) f->seek(f, f->rpos-f->rend, SEEK_CUR);
+ if (f->wpos != f->wbase) f->write(f, 0, 0);
+ if (f->rpos != f->rend) f->seek(f, f->rpos-f->rend, SEEK_CUR);
}
void __stdio_exit(void)
diff --git a/src/stdio/__toread.c b/src/stdio/__toread.c
index 309ee6e8..f142ff09 100644
--- a/src/stdio/__toread.c
+++ b/src/stdio/__toread.c
@@ -3,7 +3,7 @@
int __toread(FILE *f)
{
f->mode |= f->mode-1;
- if (f->wpos > f->wbase) f->write(f, 0, 0);
+ if (f->wpos != f->wbase) f->write(f, 0, 0);
f->wpos = f->wbase = f->wend = 0;
if (f->flags & F_NORD) {
f->flags |= F_ERR;
diff --git a/src/stdio/ext2.c b/src/stdio/ext2.c
index afd8b34e..34162780 100644
--- a/src/stdio/ext2.c
+++ b/src/stdio/ext2.c
@@ -3,14 +3,13 @@
size_t __freadahead(FILE *f)
{
- return f->rend - f->rpos;
+ return f->rend ? f->rend - f->rpos : 0;
}
const char *__freadptr(FILE *f, size_t *sizep)
{
- size_t size = f->rend - f->rpos;
- if (!size) return 0;
- *sizep = size;
+ if (f->rpos == f->rend) return 0;
+ *sizep = f->rend - f->rpos;
return (const char *)f->rpos;
}
diff --git a/src/stdio/fflush.c b/src/stdio/fflush.c
index bf1e8437..02dae27a 100644
--- a/src/stdio/fflush.c
+++ b/src/stdio/fflush.c
@@ -11,7 +11,7 @@ int fflush(FILE *f)
for (f=*__ofl_lock(); f; f=f->next) {
FLOCK(f);
- if (f->wpos > f->wbase) r |= fflush(f);
+ if (f->wpos != f->wbase) r |= fflush(f);
FUNLOCK(f);
}
__ofl_unlock();
@@ -22,7 +22,7 @@ int fflush(FILE *f)
FLOCK(f);
/* If writing, flush output */
- if (f->wpos > f->wbase) {
+ if (f->wpos != f->wbase) {
f->write(f, 0, 0);
if (!f->wpos) {
FUNLOCK(f);
@@ -31,7 +31,7 @@ int fflush(FILE *f)
}
/* If reading, sync position, per POSIX */
- if (f->rpos < f->rend) f->seek(f, f->rpos-f->rend, SEEK_CUR);
+ if (f->rpos != f->rend) f->seek(f, f->rpos-f->rend, SEEK_CUR);
/* Clear read and write modes */
f->wpos = f->wbase = f->wend = 0;
diff --git a/src/stdio/fgetln.c b/src/stdio/fgetln.c
index afe12b5d..5748435d 100644
--- a/src/stdio/fgetln.c
+++ b/src/stdio/fgetln.c
@@ -8,7 +8,7 @@ char *fgetln(FILE *f, size_t *plen)
ssize_t l;
FLOCK(f);
ungetc(getc_unlocked(f), f);
- if ((z=memchr(f->rpos, '\n', f->rend - f->rpos))) {
+ if (f->rend && (z=memchr(f->rpos, '\n', f->rend - f->rpos))) {
ret = (char *)f->rpos;
*plen = ++z - ret;
f->rpos = (void *)z;
diff --git a/src/stdio/fgets.c b/src/stdio/fgets.c
index d3f9819e..6171f398 100644
--- a/src/stdio/fgets.c
+++ b/src/stdio/fgets.c
@@ -21,14 +21,16 @@ char *fgets(char *restrict s, int n, FILE *restrict f)
}
while (n) {
- z = memchr(f->rpos, '\n', f->rend - f->rpos);
- k = z ? z - f->rpos + 1 : f->rend - f->rpos;
- k = MIN(k, n);
- memcpy(p, f->rpos, k);
- f->rpos += k;
- p += k;
- n -= k;
- if (z || !n) break;
+ if (f->rpos != f->rend) {
+ z = memchr(f->rpos, '\n', f->rend - f->rpos);
+ k = z ? z - f->rpos + 1 : f->rend - f->rpos;
+ k = MIN(k, n);
+ memcpy(p, f->rpos, k);
+ f->rpos += k;
+ p += k;
+ n -= k;
+ if (z || !n) break;
+ }
if ((c = getc_unlocked(f)) < 0) {
if (p==s || !feof(f)) s = 0;
break;
diff --git a/src/stdio/fgetwc.c b/src/stdio/fgetwc.c
index 07fb6d7c..0801e28f 100644
--- a/src/stdio/fgetwc.c
+++ b/src/stdio/fgetwc.c
@@ -10,7 +10,7 @@ static wint_t __fgetwc_unlocked_internal(FILE *f)
size_t l;
/* Convert character from buffer if possible */
- if (f->rpos < f->rend) {
+ if (f->rpos != f->rend) {
l = mbtowc(&wc, (void *)f->rpos, f->rend - f->rpos);
if (l+1 >= 1) {
f->rpos += l + !l; /* l==0 means 1 byte, null */
diff --git a/src/stdio/fread.c b/src/stdio/fread.c
index 733d3716..a2116da6 100644
--- a/src/stdio/fread.c
+++ b/src/stdio/fread.c
@@ -13,7 +13,7 @@ size_t fread(void *restrict destv, size_t size, size_t nmemb, FILE *restrict f)
f->mode |= f->mode-1;
- if (f->rend - f->rpos > 0) {
+ if (f->rpos != f->rend) {
/* First exhaust the buffer. */
k = MIN(f->rend - f->rpos, l);
memcpy(dest, f->rpos, k);
diff --git a/src/stdio/fseek.c b/src/stdio/fseek.c
index 67d75f7a..439308f7 100644
--- a/src/stdio/fseek.c
+++ b/src/stdio/fseek.c
@@ -3,10 +3,10 @@
int __fseeko_unlocked(FILE *f, off_t off, int whence)
{
/* Adjust relative offset for unread data in buffer, if any. */
- if (whence == SEEK_CUR) off -= f->rend - f->rpos;
+ if (whence == SEEK_CUR && f->rend) off -= f->rend - f->rpos;
/* Flush write buffer, and report error on failure. */
- if (f->wpos > f->wbase) {
+ if (f->wpos != f->wbase) {
f->write(f, 0, 0);
if (!f->wpos) return -1;
}
diff --git a/src/stdio/ftell.c b/src/stdio/ftell.c
index 5ca41654..1a2afbbc 100644
--- a/src/stdio/ftell.c
+++ b/src/stdio/ftell.c
@@ -5,12 +5,16 @@
off_t __ftello_unlocked(FILE *f)
{
off_t pos = f->seek(f, 0,
- (f->flags & F_APP) && f->wpos > f->wbase
+ (f->flags & F_APP) && f->wpos != f->wbase
? SEEK_END : SEEK_CUR);
if (pos < 0) return pos;
/* Adjust for data in buffer. */
- return pos - (f->rend - f->rpos) + (f->wpos - f->wbase);
+ if (f->rend)
+ pos += f->rpos - f->rend;
+ else if (f->wbase)
+ pos += f->wpos - f->wbase;
+ return pos;
}
off_t __ftello(FILE *f)
diff --git a/src/stdio/getdelim.c b/src/stdio/getdelim.c
index 60c6cc18..c313775d 100644
--- a/src/stdio/getdelim.c
+++ b/src/stdio/getdelim.c
@@ -25,8 +25,13 @@ ssize_t getdelim(char **restrict s, size_t *restrict n, int delim, FILE *restric
if (!*s) *n=0;
for (;;) {
- z = memchr(f->rpos, delim, f->rend - f->rpos);
- k = z ? z - f->rpos + 1 : f->rend - f->rpos;
+ if (f->rpos != f->rend) {
+ z = memchr(f->rpos, delim, f->rend - f->rpos);
+ k = z ? z - f->rpos + 1 : f->rend - f->rpos;
+ } else {
+ z = 0;
+ k = 0;
+ }
if (i+k+1 >= *n) {
if (k >= SIZE_MAX/2-i) goto oom;
size_t m = i+k+2;
diff --git a/src/stdio/vfwscanf.c b/src/stdio/vfwscanf.c
index 7be66344..82f48604 100644
--- a/src/stdio/vfwscanf.c
+++ b/src/stdio/vfwscanf.c
@@ -76,7 +76,7 @@ static int in_set(const wchar_t *set, int c)
#if 1
#undef getwc
#define getwc(f) \
- ((f)->rpos < (f)->rend && *(f)->rpos < 128 ? *(f)->rpos++ : (getwc)(f))
+ ((f)->rpos != (f)->rend && *(f)->rpos < 128 ? *(f)->rpos++ : (getwc)(f))
#undef ungetwc
#define ungetwc(c,f) \
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-16 15:42:23 +0000