Function xmlFileMatch 

#[unsafe(no_mangle)]
pub const unsafe extern "C" fn xmlFileMatch(
    _filename: *const c_char,
) -> c_int

Match callback: the file I/O handlers accept every filename.

UPSTREAM-PARITY

int xmlFileMatch(const char *filename);

SAFETY

• _filename must point to valid NUL-terminated strings (or NULL where the C contract allows) for the lifetime of the call.

The caller must not race this call with concurrent mutation of the same objects from other threads (per-object state is not internally synchronized). Violating any of the above is undefined behavior.

Exercised by the C-API differential courts (courts/suites/data-abi/*-family-probe.c) and the CLI differential courts; those pass byte-for-byte against the upstream oracle.