Hojun-Cho
66251cc52b
x.slicefield[:] / x.strfield[2:] emitted MOVQ $0 for the omitted hi
bound on BOTH stages (N_IDENT-gated dispatch; symmetric, so byte
identity never caught it) in all four sites: cgexpr N_SLICE + pushargs
(cstage), cgslice + pushargsrev (wwstage). The new arm re-evaluates
the pure field read for its {ptr,len,cap} header and takes .len,
covering local, viaptr, dot-chain, (*p), arr[i], and global inners.
Call inners still loud-reject upstream. Sibling of the #252/#257
array-field arms.
47 lines
1.1 KiB
Plaintext
47 lines
1.1 KiB
Plaintext
//ww:run
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// Default-hi slice of a slice/str FIELD in call-ARG position — the
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// pushargs twin of dotfield_slice_defhi. Pre-fix the pushargs
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// N_SLICE default-hi arm was N_IDENT-gated on BOTH stages, so
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// callees received a 0-length slice.
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package main;
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type inner = struct {
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buf: []i32,
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name: str,
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};
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type outer = struct {
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pad: i64,
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in: inner,
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};
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fn sum(xs: []i32) i32 = {
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let t: i32 = 0;
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let i: i32 = 0;
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for (i < len(xs)) {
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t += xs[i];
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i += 1;
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};
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return t;
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};
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fn slen(s: str) i32 = {
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return len(s);
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};
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export fn main() int = {
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let arr: [4]i32 = [10, 20, 30, 40];
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let v: inner = inner{ buf = arr[:], name = "hello" };
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if (sum(v.buf[:]) != 100) { return 1; };
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if (sum(v.buf[2:]) != 70) { return 2; };
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if (slen(v.name[1:]) != 4) { return 3; };
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let p: *inner = &v;
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if (sum(p.buf[:]) != 100) { return 4; };
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if (slen(p.name[2:]) != 3) { return 5; };
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let o: outer = outer{ pad = 7, in = inner{ buf = arr[:], name = "world" } };
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if (sum(o.in.buf[:]) != 100) { return 6; };
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if (sum(o.in.buf[1:]) != 90) { return 7; };
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if (slen(o.in.name[4:]) != 1) { return 8; };
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return 0;
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};
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