Commit b118806c69e44029a7af9c9b8bdfa9cdcd280260 | zig | Meg's Mirrors

author	SamTebbs33 <samuel.tebbs@gmail.com> 2019-07-05 00:00:12+01:00
committer	Andrew Kelley <andrew@ziglang.org> 2019-07-06 17:02:17-04:00
log	b118806c69e44029a7af9c9b8bdfa9cdcd280260
tree	a76bb5a3b4d9d3c407a81d6c7924b9f338cb293a
parent	21c60922e3514ca15fa505efb380fb37fde8d62a

Add implicit cast for [N]T to [c]T

2 files changed, 12 insertions(+), 2 deletions(-)

src
- ir.cpp
test
- stage1
  - behavior
    cast.zig

src/ir.cpp+2-2

...	...	@@ -12773,9 +12773,9 @@ static IrInstruction ir_analyze_cast(IrAnalyze ira, IrInstruction *source_inst
12773	12773	}
12774	12774	}
12775	12775
12776		// [N]T to []T
	12776	// [N]T to []T and [*c]T
12777	12777	if (wanted_type->id == ZigTypeIdPointer &&
12778		wanted_type->data.pointer.ptr_len == PtrLenUnknown &&
	12778	(wanted_type->data.pointer.ptr_len == PtrLenUnknown \|\| wanted_type->data.pointer.ptr_len == PtrLenC) &&
12779	12779	actual_type->id == ZigTypeIdPointer &&
12780	12780	actual_type->data.pointer.ptr_len == PtrLenSingle &&
12781	12781	actual_type->data.pointer.child_type->id == ZigTypeIdArray)

test/stage1/behavior/cast.zig+10

...	...	@@ -404,6 +404,16 @@ test "implicit cast from [N]T to ?[]T" {
404	404	expect(std.mem.eql(u16, x.?[0..4], y[0..4]));
405	405	}
406	406
	407	test "implicit cast from [N]T to [c]T" {
	408	var x: [4]u16 = [4]u16{ 0, 1, 2, 3 };
	409	var y: [*c]u16 = &x;
	410
	411	expect(std.mem.eql(u16, x[0..4], y[0..4]));
	412	x[0] = 8;
	413	y[3] = 6;
	414	expect(std.mem.eql(u16, x[0..4], y[0..4]));
	415	}
	416
407	417	test "implicit cast from T to ?c_void" {
408	418	var a: u8 = 1;
409	419	incrementVoidPtrValue(&a);