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[AIX] Make errno EWOULDBLOCK an alias of EAGAIN #4790

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Merged
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Oct 27, 2025
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[AIX] Make errno EWOULDBLOCK an alias of EAGAIN #4790

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Change errno EWOULDBLOCK to make it an alias of EAGAIN.
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@xingxue-ibm
xingxue-ibm committed Oct 27, 2025
commit b50a78d34803deb12ecbe5b957f8f77b77c67d38
8 changes: 3 additions & 5 deletions libc-test/build.rs
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Expand Up @@ -5180,11 +5180,9 @@ fn test_aix(target: &str) {
// Skip 'sighandler_t' assignments.
"SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true,

// _ALL_SOURCE defines these errno values as aliases of other errno
// values, but POSIX requires each errno to be unique. Skip these
// values because non-unique values are being used which will
// fail the test when _ALL_SOURCE is defined.
"EWOULDBLOCK" | "ENOTEMPTY" => true,
// _ALL_SOURCE defines ENOTEMPTY as an alias of EEXIST, but POSIX
// requires its value to be unique. Skip.
"ENOTEMPTY" => true,

// FIXME(ctest): These constants are intended for use as the 'int request' argument
// to 'ioctl()'. However, the AIX headers do not explicitly define their types. If a
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3 changes: 2 additions & 1 deletion src/unix/aix/mod.rs
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Expand Up @@ -1275,7 +1275,8 @@ pub const ENOLCK: c_int = 49;
pub const ENOCONNECT: c_int = 50;
pub const ESTALE: c_int = 52;
pub const EDIST: c_int = 53;
pub const EWOULDBLOCK: c_int = 54;
// POSIX allows EWOULDBLOCK to be the same value as EAGAIN.
pub const EWOULDBLOCK: c_int = EAGAIN;
pub const EINPROGRESS: c_int = 55;
pub const EALREADY: c_int = 56;
pub const ENOTSOCK: c_int = 57;
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