Zig Version
0.16.0-dev.362+010d9a63f
Steps to Reproduce and Observed Behavior
Try to run the following code snippet:
pub fn main() void {
comptime var lookupTable: [32][32]u8 = @splat(@splat(0));
_ = &lookupTable;
var runtimeValue: usize = 0;
_ = &runtimeValue;
_ = lookupTable[runtimeValue][runtimeValue];
}Observe that it produces a compiler error:
$ zig-debug run test.zig
test.zig:10:17: error: runtime value contains reference to comptime var
_ = lookupTable[runtimeValue][runtimeValue];
~~~~~~~~~~~^~~~~~~~~~~~~~
test.zig:10:17: note: comptime var pointers are not available at runtime
test.zig:4:11: note: 'runtime_value' points to comptime var declared here
comptime var lookupTable: [32][32]u8 = @splat(@splat(0));
~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
referenced by:
callMain [inlined]: /home/mint/zig/zig-out/lib/zig/std/start.zig:618:22
callMainWithArgs [inlined]: /home/mint/zig/zig-out/lib/zig/std/start.zig:587:20
posixCallMainAndExit: /home/mint/zig/zig-out/lib/zig/std/start.zig:542:36
2 reference(s) hidden; use '-freference-trace=5' to see all references
This does not happen with one-dimensional arrays.
Expected Behavior
It used to work in older zig versions (0.16.0-dev.321+3cc0fc601), so I assume this regressed in #25154.
I assume it was an unintentional change, since it wasn't mentioned in the migration guide.
Zig Version
0.16.0-dev.362+010d9a63f
Steps to Reproduce and Observed Behavior
Try to run the following code snippet:
Observe that it produces a compiler error:
This does not happen with one-dimensional arrays.
Expected Behavior
It used to work in older zig versions (0.16.0-dev.321+3cc0fc601), so I assume this regressed in #25154.
I assume it was an unintentional change, since it wasn't mentioned in the migration guide.