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off_t can be larger than mrb_int.

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This commit is contained in:
Tomoyuki Sahara
2015-10-20 16:03:02 +09:00
parent db7d829679
commit 828551f86c
1 changed files with 8 additions and 4 deletions
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src/io.c
+8 -4
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@@ -525,7 +525,8 @@ mrb_value
mrb_io_sysseek(mrb_state *mrb, mrb_value io)
{
struct mrb_io *fptr;
mrb_int pos, offset, whence = -1;
off_t pos;
mrb_int offset, whence = -1;
mrb_get_args(mrb, "i|i", &offset, &whence);
if (whence < 0) {
@@ -534,11 +535,14 @@ mrb_io_sysseek(mrb_state *mrb, mrb_value io)
fptr = (struct mrb_io *)mrb_get_datatype(mrb, io, &mrb_io_type);
pos = lseek(fptr->fd, offset, whence);
if (pos < 0) {
if (pos == -1) {
mrb_sys_fail(mrb, "sysseek");
}
return mrb_fixnum_value(pos);
if (pos > MRB_INT_MAX) {
return mrb_float_value(mrb, (mrb_float)pos);
} else {
return mrb_fixnum_value(pos);
}
}
mrb_value