270652186e
Two flat imports each declare `absval` via `extern libc "abs"` (the `extern` twin of example 0729's `#foreign` form). Like its #foreign twin, this must compile + run (prints 7), not error as an ambiguous bare-call collision. Today `isPlainFreeFn` / `isPlainFreeFnDecl` exclude a `#foreign` body but classify an empty-block `extern` fn as a plain free function, so the two extern authors ARE counted in the bare-call ambiguity verdict and the call errors. A third extern/#foreign divergence (after visibility + variadic) and a prerequisite for migrating the fn-decl `#foreign` path onto `extern`. 646 corpus (1230 xfail), 444 unit.
22 lines
1018 B
Plaintext
22 lines
1018 B
Plaintext
// Two flat FILE imports each declare the SAME libc symbol `absval` via the
|
|
// `extern` keyword (the linkage-keyword twin of example 0729's `#foreign`
|
|
// form). The bare-call resolver must NOT count extern authors when deciding
|
|
// ambiguity — they are external C symbols, never rerouted by the bare-call
|
|
// machinery, so the existing first-wins foreign/extern dispatch binds the
|
|
// call and a same-name extern collision compiles + runs (prints 7), it does
|
|
// NOT error as ambiguous.
|
|
//
|
|
// Regression (FFI-linkage Part B): `isPlainFreeFn` / `isPlainFreeFnDecl`
|
|
// excluded a `#foreign` body but classified an empty-block `extern` fn as a
|
|
// plain free function, so the two extern authors were wrongly counted as an
|
|
// ambiguous bare-call collision. Prerequisite for migrating the fn-decl
|
|
// `#foreign` path onto `extern`.
|
|
#import "modules/std.sx";
|
|
#import "1230-ffi-extern-same-name-authors/a.sx";
|
|
#import "1230-ffi-extern-same-name-authors/b.sx";
|
|
|
|
main :: () -> i32 {
|
|
print("absval = {}\n", absval(-7));
|
|
0
|
|
}
|