bb80b7ca87
87/87 regression tests pass (was 86; +ffi-01-primitives).
vendors/ffi_primitives/{.h,.c} exposes a trivial identity roundtrip
per primitive C type — int/uint/short/ushort/long long/unsigned long
long/signed char/unsigned char/float/double/void* — plus two-arg
add helpers (int + double) for multi-arg ABI exercise. The sx-side
example imports the .h via `#import c { #include / #source }` and
prints each result; the snapshot in tests/expected pins today's
parameter + return ABI so Phase 1's #objc_call / #jni_call lowering
work can't silently regress primitive marshalling.
Two findings logged in current/CHECKPOINT-FFI.md's Known issues
section (current behavior, not new bugs): (1) c_import.zig maps
`signed char` -> `u8` not `s8`, and (2) sx integer-literal parser
rejects values >= 2^63 as overflow even when the receiver is u64.
Both worked around in this test without blocking the baseline.
17 lines
933 B
C
17 lines
933 B
C
#include "ffi_primitives.h"
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int ffi_id_int (int v) { return v; }
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unsigned int ffi_id_uint (unsigned int v) { return v; }
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short ffi_id_short (short v) { return v; }
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unsigned short ffi_id_ushort(unsigned short v) { return v; }
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long long ffi_id_s64 (long long v) { return v; }
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unsigned long long ffi_id_u64 (unsigned long long v) { return v; }
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signed char ffi_id_schar (signed char v) { return v; }
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unsigned char ffi_id_uchar (unsigned char v) { return v; }
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float ffi_id_f32 (float v) { return v; }
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double ffi_id_f64 (double v) { return v; }
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void * ffi_id_ptr (void * v) { return v; }
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int ffi_add_int (int a, int b) { return a + b; }
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double ffi_add_double(double a, double b) { return a + b; }
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