Auto merge of #63380 - Centril:rollup-tzfhtnu, r=Centril

Rollup of 8 pull requests

Successful merges:

 - #63261 (bump rand in libcore/liballoc test suites)
 - #63316 (Update rustfmt to 1.4.4)
 - #63332 (Add an overflow check in truncate implementation for Unix.)
 - #63342 (Don't use remap-path-prefix in dep-info files.)
 - #63366 (doc: Fix typo in float from bytes methods)
 - #63370 (Fix ICE #63364)
 - #63377 (Improved documentation for compile_error!())
 - #63379 (Add test for issue 53096)

Failed merges:

r? @ghost

1 files changed, 9 insertions, 3 deletions

diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index 822feacea62..3b1eb86b84f 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -557,9 +557,15 @@ impl File {
         return crate::sys::android::ftruncate64(self.0.raw(), size);
 
         #[cfg(not(target_os = "android"))]
-        return cvt_r(|| unsafe {
-            ftruncate64(self.0.raw(), size as off64_t)
-        }).map(|_| ());
+        {
+            use crate::convert::TryInto;
+            let size: off64_t = size
+                .try_into()
+                .map_err(|e| io::Error::new(io::ErrorKind::InvalidInput, e))?;
+            cvt_r(|| unsafe {
+                ftruncate64(self.0.raw(), size)
+            }).map(|_| ())
+        }
     }
 
     pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {