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Fix setvbuf

This commit is contained in:
K. Lange 2018-07-01 09:30:16 +09:00
parent 0d3af97b08
commit 38e380fc49
1 changed files with 2 additions and 1 deletions
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3
libc/stdio/stdio.c
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@ -83,6 +83,7 @@ int setvbuf(FILE * stream, char * buf, int mode, size_t size) {
if (stream->read_buf) {
free(stream->read_buf);
}
stream->read_buf = buf;
stream->bufsiz = size;
}
return 0;
@ -127,7 +128,7 @@ static size_t read_bytes(FILE * f, char * out, size_t len) {
}
//fprintf(stderr, "%s: reading until %d reaches %d or %d reaches 0\n", _argv_0, f->read_from, f->offset, len);
while (f->read_from < f->offset && len > 0) {
while (f->read_from < f->offset && len > 0 && f->available > 0) {
*out = f->read_buf[f->read_from];
len--;
f->read_from++;