d680b320f4
A module-global aggregate initializer rejected a `null` literal in a pointer (or optional-pointer) field as "must be initialized by a compile-time constant". `Lowering.constExprValue` had no `.null_literal` arm, so the null leaf returned no constant and the whole aggregate looked non-constant — even though `null` is the compile-time zero pointer (a top-level scalar `p : *s64 = null;` already serialized fine). Add `.null_literal => .null_val` to constExprValue. While here, make the two LLVM constant emitters exhaustive: emitConstAggregate and the top-level init_val switch in emit_llvm.zig previously ended in a silent `else => LLVMConstNull(...)` catch-all (the silent-arm class CLAUDE.md mandates rooting out). They now handle every ConstantValue tag explicitly (.null_val/.zeroinit -> all-zero constant, .undef -> LLVMGetUndef, .func_ref resolved, nested .vtable is a hard @panic tripwire). The reject-loud path for genuinely non-constant fields is preserved. Regression: examples/0138 (array-of-struct null ptr fields, array of all-null pointers, nested struct-in-struct null ptr) and the negative examples/1126 (null ptr field beside a non-const field still errors). Fail-before/pass-after verified.
22 lines
828 B
Plaintext
22 lines
828 B
Plaintext
// A module-global aggregate with a NULL pointer field is fine (null is a
|
|
// compile-time constant), but a sibling field initialized from a NON-constant
|
|
// expression (here a runtime function call) must still be rejected loudly. The
|
|
// presence of an accepted `null` must NOT widen the gate to admit the
|
|
// non-constant neighbor.
|
|
// Regression (issue 0081): the null-pointer fix must not regress the
|
|
// reject-loud behavior for genuinely non-constant initializers (issues
|
|
// 0072/0080). Expected: "global 'boxes' must be initialized by a compile-time
|
|
// constant"; exit 1.
|
|
|
|
#import "modules/std.sx";
|
|
|
|
runtime_marker :: () -> s64 { return 7; }
|
|
|
|
Box :: struct { p: *s64; marker: s64; }
|
|
boxes : [1]Box = .[ .{ p = null, marker = runtime_marker() } ];
|
|
|
|
main :: () -> s32 {
|
|
print("marker={}\n", boxes[0].marker);
|
|
return 0;
|
|
}
|