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remove no-longer-needed zero checks

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This commit is contained in:
Ralf Jung
2019-11-14 10:29:43 +01:00
parent 09b0a8a813
commit c790317eb9
1 changed files with 2 additions and 8 deletions
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src/shims/fs.rs
+2 -8
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@@ -175,10 +175,7 @@ fn read(
.to_machine_usize(&*this.tcx)?
.min((1 << (ptr_size - 1)) - 1) // max value of target `isize`
.min(isize::max_value() as u64);
// Reading zero bytes should not change `buf`.
if count == 0 {
return Ok(0);
}
let fd = this.read_scalar(fd_op)?.to_i32()?;
let buf = this.read_scalar(buf_op)?.not_undef()?;
@@ -231,10 +228,7 @@ fn write(
.to_machine_usize(&*this.tcx)?
.min((1 << (ptr_size - 1)) - 1) // max value of target `isize`
.min(isize::max_value() as u64);
// Writing zero bytes should not change `buf`.
if count == 0 {
return Ok(0);
}
let fd = this.read_scalar(fd_op)?.to_i32()?;
let buf = this.read_scalar(buf_op)?.not_undef()?;