4e942b5373
Rename all example tests/companions to the XXXX-category-test-name scheme (per-category 100-blocks: basic 0010, types 0100, ... errors 1000, diagnostics 1100, ffi 1200, ffi-objc 1300, ffi-jni 1400, vectors 1500, platform 1600). Companions and dir/C fixtures move in lockstep with their parent test; #import/#source/#include paths rewritten to match. Expected output now lives in examples/expected/ (a sibling dir of the tests) split into three streams per the new convention: <name>.exit / <name>.stdout / <name>.stderr (+ optional <name>.ir) run_examples.sh rewritten: scans examples/ and issues/ for an expected/<name>.exit marker, captures stdout and stderr separately (no more 2>&1), compares each stream + exit + optional IR snapshot. Behavior validated unchanged: every renamed test reproduces its prior merged output + exit (diffs limited to file paths/basenames embedded in diagnostics + traces, which correctly reflect the new names). Suite: 292 passed, 0 failed. 50-smoke.sx split + issue relocation + docs follow in subsequent commits.
38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
// Regression test for issue-0025 path B.
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//
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// When a fn-pointer's type is spelled with `callconv(.c)`, the indirect
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// call must apply the same C-ABI byval coercion that direct C-ABI calls
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// do at the call site (path A): >16-byte non-HFA aggregates are passed
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// as `ptr byval(<T>)`. Without the fix, the indirect call site builds
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// an LLVM function type whose param slot is the raw struct, which the
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// AArch64/x86_64 backend tries to lay out across registers + stack in
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// ways that don't match the byval-attributed callee signature — the
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// callee then reads garbage out of the wrong machine-state slots.
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//
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// The opt-in is the `callconv(.c)` on the fn-pointer type spelling.
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// Pure-sx fn-pointer casts (no callconv suffix) keep their default
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// calling convention — verified by examples/87-fnptr-cast-large-aggregate.sx.
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#import "modules/std.sx";
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Wide :: struct {
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a: s64;
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b: s64;
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c: s64;
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d: s64;
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}
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accept_c :: (w: Wide) -> s64 callconv(.c) {
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w.a + w.b + w.c + w.d;
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}
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main :: () -> s32 {
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w := Wide.{ a = 1, b = 10, c = 100, d = 1000 };
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if accept_c(w) != 1111 { return 1; }
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fn_ptr : (Wide) -> s64 callconv(.c) = xx accept_c;
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if fn_ptr(w) != 1111 { return 2; }
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0;
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}
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