#[unsafe(no_mangle)]pub unsafe extern "C" fn patch_seq_test_set_line(line: i64)Expand description
Announce the source line of the next test.assert* call.
Called by generated code immediately before each assertion so the
runtime can attribute a failure to its source position. line is
1-indexed; pass 0 to clear.
This helper takes a raw i64 rather than a stack argument because it
is a compiler-emitted diagnostic, not a user-callable Seq builtin.
ยงSafety
Safe to call from any thread. Acquires the global test-context mutex; no other preconditions.