From 926f36400f1667edec92959d8b640dea5084674c Mon Sep 17 00:00:00 2001
From: newpavlov <newpavlov@gmail.com>
Date: Wed, 21 Aug 2019 19:36:12 +0300
Subject: [PATCH] move cvt

---
 src/libstd/Cargo.toml      |  1 +
 src/libstd/sys/wasi/mod.rs | 23 -----------------------
 src/libstd/sys/wasi/os.rs  | 25 ++++++++++++++++++++++++-
 3 files changed, 25 insertions(+), 24 deletions(-)

diff --git a/src/libstd/Cargo.toml b/src/libstd/Cargo.toml
index bb77a5bdea493..d801b051357a4 100644
--- a/src/libstd/Cargo.toml
+++ b/src/libstd/Cargo.toml
@@ -24,6 +24,7 @@ compiler_builtins = { version = "0.1.16" }
 profiler_builtins = { path = "../libprofiler_builtins", optional = true }
 unwind = { path = "../libunwind" }
 hashbrown = { version = "0.5.0", features = ['rustc-dep-of-std'] }
+wasi = { git = "https://github.com/newpavlov/rust-wasi", branch = "safe_rework", features = ['rustc-dep-of-std', 'alloc'] }
 
 [dependencies.backtrace]
 version = "0.3.35"
diff --git a/src/libstd/sys/wasi/mod.rs b/src/libstd/sys/wasi/mod.rs
index 89f7c887aafc0..f87e4d16fcdac 100644
--- a/src/libstd/sys/wasi/mod.rs
+++ b/src/libstd/sys/wasi/mod.rs
@@ -102,29 +102,6 @@ pub fn hashmap_random_keys() -> (u64, u64) {
     return ret
 }
 
-#[doc(hidden)]
-pub trait IsMinusOne {
-    fn is_minus_one(&self) -> bool;
-}
-
-macro_rules! impl_is_minus_one {
-    ($($t:ident)*) => ($(impl IsMinusOne for $t {
-        fn is_minus_one(&self) -> bool {
-            *self == -1
-        }
-    })*)
-}
-
-impl_is_minus_one! { i8 i16 i32 i64 isize }
-
-pub fn cvt<T: IsMinusOne>(t: T) -> std_io::Result<T> {
-    if t.is_minus_one() {
-        Err(std_io::Error::last_os_error())
-    } else {
-        Ok(t)
-    }
-}
-
 fn err2io(err: wasi::Error) -> std_io::Error {
     std_io::Error::from_raw_os_error(err.get() as i32)
 }
diff --git a/src/libstd/sys/wasi/os.rs b/src/libstd/sys/wasi/os.rs
index 7ee23c9a35ec7..feee840782550 100644
--- a/src/libstd/sys/wasi/os.rs
+++ b/src/libstd/sys/wasi/os.rs
@@ -9,7 +9,7 @@ use crate::path::{self, PathBuf};
 use crate::ptr;
 use crate::str;
 use crate::sys::memchr;
-use crate::sys::{cvt, unsupported, Void};
+use crate::sys::{unsupported, Void};
 use crate::vec;
 
 #[cfg(not(target_feature = "atomics"))]
@@ -176,3 +176,26 @@ pub fn exit(code: i32) -> ! {
 pub fn getpid() -> u32 {
     panic!("unsupported");
 }
+
+#[doc(hidden)]
+pub trait IsMinusOne {
+    fn is_minus_one(&self) -> bool;
+}
+
+macro_rules! impl_is_minus_one {
+    ($($t:ident)*) => ($(impl IsMinusOne for $t {
+        fn is_minus_one(&self) -> bool {
+            *self == -1
+        }
+    })*)
+}
+
+impl_is_minus_one! { i8 i16 i32 i64 isize }
+
+fn cvt<T: IsMinusOne>(t: T) -> io::Result<T> {
+    if t.is_minus_one() {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(t)
+    }
+}