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uwu wind

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This commit is contained in:
nora 2023-06-13 20:26:52 +02:00
parent 38f8ee66e6
commit b5ee24f896
5 changed files with 171 additions and 28 deletions
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18
src/stdext.rs
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@ -22,15 +22,14 @@ pub fn print(args: fmt::Arguments<'_>) -> fmt::Result {
write!(LibCStdoutWriter, "{}", args)
}
macro_rules! print {
($($tt:tt)*) => {{
$crate::stdext::print(format_args!($($tt)*)).unwrap();
}};
}
macro_rules! trace {
($($tt:tt)*) => {
print!("UWUWIND TRACE | uwuwind/{}:{}: {}\n", file!(), line!(), format_args!($($tt)*))
// We separate out the format_args for rust-analyzer support.
match format_args!($($tt)*) {
args => {
$crate::stdext::print(::core::format_args!("UWUWIND TRACE | uwuwind/{}:{}: {}\n", file!(), line!(), args)).expect("failed to trace")
}
}
};
}
@ -49,11 +48,6 @@ fn errno() -> i32 {
pub(crate) fn with_last_os_error_str<R>(f: impl FnOnce(&str) -> R) -> R {
let mut buf: [u8; 512] = [0; 512];
extern "C" {
// the libc crate only has the definition for the POSIX version, but a GNU system has the GNU version.
fn strerror_r(errnum: i32, buf: *mut ffi::c_char, buflen: usize) -> i32;
}
// SAFETY: Our buffer length is passed correctly
let error = unsafe { libc::strerror_r(errno(), buf.as_mut_ptr().cast(), buf.len()) };
// SAFETY: strerror_r writes the string to buf, even if it didnt write anything, we did zero init it.