diff options
Diffstat (limited to 'library/std/src/sys/windows/stdio.rs')
| -rw-r--r-- | library/std/src/sys/windows/stdio.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/library/std/src/sys/windows/stdio.rs b/library/std/src/sys/windows/stdio.rs index 2e3e0859d..3fcaaa508 100644 --- a/library/std/src/sys/windows/stdio.rs +++ b/library/std/src/sys/windows/stdio.rs @@ -11,6 +11,9 @@ use crate::sys::cvt; use crate::sys::handle::Handle; use core::str::utf8_char_width; +#[cfg(test)] +mod tests; + // Don't cache handles but get them fresh for every read/write. This allows us to track changes to // the value over time (such as if a process calls `SetStdHandle` while it's running). See #40490. pub struct Stdin { @@ -383,6 +386,10 @@ fn utf16_to_utf8(utf16: &[u16], utf8: &mut [u8]) -> io::Result<usize> { debug_assert!(utf16.len() <= c::c_int::MAX as usize); debug_assert!(utf8.len() <= c::c_int::MAX as usize); + if utf16.is_empty() { + return Ok(0); + } + let result = unsafe { c::WideCharToMultiByte( c::CP_UTF8, // CodePage |