authorgravatar for samuel.tebbs@gmail.comSamTebbs33 <samuel.tebbs@gmail.com> 2019-07-05 00:00:12+01:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2019-07-06 17:02:17-04:00
logb118806c69e44029a7af9c9b8bdfa9cdcd280260
treea76bb5a3b4d9d3c407a81d6c7924b9f338cb293a
parent21c60922e3514ca15fa505efb380fb37fde8d62a

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

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

src/ir.cpp+2-2
...@@ -12773,9 +12773,9 @@ static IrInstruction *ir_analyze_cast(IrAnalyze *ira, IrInstruction *source_inst...@@ -12773,9 +12773,9 @@ static IrInstruction *ir_analyze_cast(IrAnalyze *ira, IrInstruction *source_inst
12773 }12773 }
12774 }12774 }
1277512775
12776 // *[N]T to [*]T12776 // *[N]T to [*]T and [*c]T
12777 if (wanted_type->id == ZigTypeIdPointer &&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 actual_type->id == ZigTypeIdPointer &&12779 actual_type->id == ZigTypeIdPointer &&
12780 actual_type->data.pointer.ptr_len == PtrLenSingle &&12780 actual_type->data.pointer.ptr_len == PtrLenSingle &&
12781 actual_type->data.pointer.child_type->id == ZigTypeIdArray)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" {...@@ -404,6 +404,16 @@ test "implicit cast from *[N]T to ?[*]T" {
404 expect(std.mem.eql(u16, x.?[0..4], y[0..4]));404 expect(std.mem.eql(u16, x.?[0..4], y[0..4]));
405}405}
406406
407test "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
407test "implicit cast from *T to ?*c_void" {417test "implicit cast from *T to ?*c_void" {
408 var a: u8 = 1;418 var a: u8 = 1;
409 incrementVoidPtrValue(&a);419 incrementVoidPtrValue(&a);