Commit 805e51389ba89ad1460efafcf2e0a373008d72bc | zig

author	David Rubin <sinon@vortan.dev> 2026-06-09 18:37:12-07:00
committer	Alex Rønne Petersen <alex@alexrp.com> 2026-06-18 16:42:32+02:00
log	805e51389ba89ad1460efafcf2e0a373008d72bc
tree	d2112d473cd0510c9576e6f244dba754536893fe
parent	5d3be4fbe8372e357a25a7e24e4825425de086fe

4 files changed, 45 insertions(+), 23 deletions(-)

src/Sema.zig+1-1

...	...	@@ -9293,7 +9293,7 @@ fn intCast(
9293	9293	break :ok all_in_range;
9294	9294	} else ok: {
9295	9295	const zero_inst = Air.internedToRef((try pt.intValue(operand_ty, 0)).toIntern());
9296		const is_in_range = try block.addBinOp(.cmp_lte, operand, zero_inst);
	9296	const is_in_range = try block.addBinOp(.cmp_eq, operand, zero_inst);
9297	9297	break :ok is_in_range;
9298	9298	};
9299	9299	try sema.addSafetyCheck(block, src, ok, .integer_out_of_bounds);

test/cases/safety/@intCast negative to u0.zig created+22

...	...	@@ -0,0 +1,22 @@
	1	const std = @import("std");
	2
	3	pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace, _: ?usize) noreturn {
	4	_ = stack_trace;
	5	if (std.mem.eql(u8, message, "integer does not fit in destination type")) {
	6	std.process.exit(0);
	7	}
	8	std.process.exit(1);
	9	}
	10
	11	pub fn main() !void {
	12	bar(1, -1);
	13	return error.TestFailed;
	14	}
	15
	16	fn bar(one: u1, not_zero: i32) void {
	17	const x = one << @intCast(not_zero);
	18	_ = x;
	19	}
	20	// run
	21	// backend=selfhosted,llvm
	22	// target=x86_64-linux,aarch64-linux

test/cases/safety/@intCast positive to u0.zig created+22

...	...	@@ -0,0 +1,22 @@
	1	const std = @import("std");
	2
	3	pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace, _: ?usize) noreturn {
	4	_ = stack_trace;
	5	if (std.mem.eql(u8, message, "integer does not fit in destination type")) {
	6	std.process.exit(0);
	7	}
	8	std.process.exit(1);
	9	}
	10
	11	pub fn main() !void {
	12	bar(1, 1);
	13	return error.TestFailed;
	14	}
	15
	16	fn bar(one: u1, not_zero: i32) void {
	17	const x = one << @intCast(not_zero);
	18	_ = x;
	19	}
	20	// run
	21	// backend=selfhosted,llvm
	22	// target=x86_64-linux,aarch64-linux

test/cases/safety/@intCast to u0.zig deleted-22

...	...	@@ -1,22 +0,0 @@
1		const std = @import("std");
2
3		pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace, _: ?usize) noreturn {
4		_ = stack_trace;
5		if (std.mem.eql(u8, message, "integer does not fit in destination type")) {
6		std.process.exit(0);
7		}
8		std.process.exit(1);
9		}
10
11		pub fn main() !void {
12		bar(1, 1);
13		return error.TestFailed;
14		}
15
16		fn bar(one: u1, not_zero: i32) void {
17		const x = one << @intCast(not_zero);
18		_ = x;
19		}
20		// run
21		// backend=selfhosted,llvm
22		// target=x86_64-linux,aarch64-linux