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Sema: make @returnAddress return 0 at comptime

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See also #14938.

Resolves: #14931
This commit is contained in:
mlugg 2023-03-17 02:40:47 +00:00 • committed by Andrew Kelley
parent 9f2aa3fbee
commit 71e873703f
3 changed files with 25 additions and 3 deletions
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10
src/Sema.zig
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@ -15454,9 +15454,13 @@ fn zirRetAddr(
block: *Block,
extended: Zir.Inst.Extended.InstData,
) CompileError!Air.Inst.Ref {
const src = LazySrcLoc.nodeOffset(@bitCast(i32, extended.operand));
try sema.requireRuntimeBlock(block, src, null);
return try block.addNoOp(.ret_addr);
_ = extended;
if (block.is_comptime) {
// TODO: we could give a meaningful lazy value here. #14938
return sema.addIntUnsigned(Type.usize, 0);
} else {
return block.addNoOp(.ret_addr);
}
}
fn zirFrameAddress(

1
test/behavior.zig
View file

@ -191,6 +191,7 @@ test {
_ = @import("behavior/pub_enum.zig");
_ = @import("behavior/ref_var_in_if_after_if_2nd_switch_prong.zig");
_ = @import("behavior/reflection.zig");
_ = @import("behavior/return_address.zig");
_ = @import("behavior/saturating_arithmetic.zig");
_ = @import("behavior/select.zig");
_ = @import("behavior/shuffle.zig");

17
test/behavior/return_address.zig Normal file
View file

@ -0,0 +1,17 @@
const builtin = @import("builtin");
const testing = @import("std").testing;
fn retAddr() usize {
return @returnAddress();
}
test "return address" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
_ = retAddr();
// TODO: #14938
try testing.expectEqual(0, comptime retAddr());
}