diff options
Diffstat (limited to 'libgfortran/io/unix.c')
| -rw-r--r-- | libgfortran/io/unix.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/libgfortran/io/unix.c b/libgfortran/io/unix.c index aa2feab..fd5f277 100644 --- a/libgfortran/io/unix.c +++ b/libgfortran/io/unix.c @@ -518,16 +518,26 @@ buf_read (unix_stream * s, void * buf, ssize_t nbyte) if (to_read <= BUFFER_SIZE/2) { did_read = raw_read (s, s->buffer, BUFFER_SIZE); - s->physical_offset += did_read; - s->active = did_read; - did_read = (did_read > to_read) ? to_read : did_read; - memcpy (p, s->buffer, did_read); + if (likely (did_read >= 0)) + { + s->physical_offset += did_read; + s->active = did_read; + did_read = (did_read > to_read) ? to_read : did_read; + memcpy (p, s->buffer, did_read); + } + else + return did_read; } else { did_read = raw_read (s, p, to_read); - s->physical_offset += did_read; - s->active = 0; + if (likely (did_read >= 0)) + { + s->physical_offset += did_read; + s->active = 0; + } + else + return did_read; } nbyte = did_read + nread; } |