9a2c78d6b9
A trailing `..args: []T` on an `extern` fn must map to the C `...` tail like its `#foreign` twin (example 1218). Today the variadic handling in both declareFunction (is_variadic drop) and packVariadicCallArgs (call-site early-out) is gated on `#foreign` only, so a variadic `extern` keeps the trailing slice param and slice-packs the extras — garbage at the C ABI (probe: sum_ints(3,10,20,30) → 53316585, not 60). Example 1229 pins the DESIRED correct output; the next commit extends both gates to cover extern and greens it. Prerequisite for migrating the fn-decl `#foreign` path onto `extern`. 645 corpus (1229 xfail), 444 unit.
21 lines
448 B
C
21 lines
448 B
C
#include <stdarg.h>
|
|
|
|
long long sx_ext_sum_ints(int n, ...) {
|
|
va_list ap;
|
|
va_start(ap, n);
|
|
long long total = 0;
|
|
for (int i = 0; i < n; i++) total += va_arg(ap, int);
|
|
va_end(ap);
|
|
return total;
|
|
}
|
|
|
|
double sx_ext_avg_doubles(int n, ...) {
|
|
va_list ap;
|
|
va_start(ap, n);
|
|
double total = 0.0;
|
|
for (int i = 0; i < n; i++) total += va_arg(ap, double);
|
|
va_end(ap);
|
|
if (n == 0) return 0.0;
|
|
return total / n;
|
|
}
|