diff options
Diffstat (limited to 'test/behavior/comptime_memory.zig')
| -rw-r--r-- | test/behavior/comptime_memory.zig | 68 |
1 files changed, 34 insertions, 34 deletions
diff --git a/test/behavior/comptime_memory.zig b/test/behavior/comptime_memory.zig index d327afb783..b0c5e9c91e 100644 --- a/test/behavior/comptime_memory.zig +++ b/test/behavior/comptime_memory.zig @@ -6,7 +6,7 @@ const ptr_size = @sizeOf(usize); test "type pun signed and unsigned as single pointer" { comptime { var x: u32 = 0; - const y = @ptrCast(*i32, &x); + const y = @as(*i32, @ptrCast(&x)); y.* = -1; try testing.expectEqual(@as(u32, 0xFFFFFFFF), x); } @@ -15,7 +15,7 @@ test "type pun signed and unsigned as single pointer" { test "type pun signed and unsigned as many pointer" { comptime { var x: u32 = 0; - const y = @ptrCast([*]i32, &x); + const y = @as([*]i32, @ptrCast(&x)); y[0] = -1; try testing.expectEqual(@as(u32, 0xFFFFFFFF), x); } @@ -24,7 +24,7 @@ test "type pun signed and unsigned as many pointer" { test "type pun signed and unsigned as array pointer" { comptime { var x: u32 = 0; - const y = @ptrCast(*[1]i32, &x); + const y = @as(*[1]i32, @ptrCast(&x)); y[0] = -1; try testing.expectEqual(@as(u32, 0xFFFFFFFF), x); } @@ -38,7 +38,7 @@ test "type pun signed and unsigned as offset many pointer" { comptime { var x: u32 = 0; - var y = @ptrCast([*]i32, &x); + var y = @as([*]i32, @ptrCast(&x)); y -= 10; y[10] = -1; try testing.expectEqual(@as(u32, 0xFFFFFFFF), x); @@ -53,7 +53,7 @@ test "type pun signed and unsigned as array pointer with pointer arithemtic" { comptime { var x: u32 = 0; - const y = @ptrCast([*]i32, &x) - 10; + const y = @as([*]i32, @ptrCast(&x)) - 10; const z: *[15]i32 = y[0..15]; z[10] = -1; try testing.expectEqual(@as(u32, 0xFFFFFFFF), x); @@ -64,9 +64,9 @@ test "type pun value and struct" { comptime { const StructOfU32 = extern struct { x: u32 }; var inst: StructOfU32 = .{ .x = 0 }; - @ptrCast(*i32, &inst.x).* = -1; + @as(*i32, @ptrCast(&inst.x)).* = -1; try testing.expectEqual(@as(u32, 0xFFFFFFFF), inst.x); - @ptrCast(*i32, &inst).* = -2; + @as(*i32, @ptrCast(&inst)).* = -2; try testing.expectEqual(@as(u32, 0xFFFFFFFE), inst.x); } } @@ -81,8 +81,8 @@ test "type pun endianness" { comptime { const StructOfBytes = extern struct { x: [4]u8 }; var inst: StructOfBytes = .{ .x = [4]u8{ 0, 0, 0, 0 } }; - const structPtr = @ptrCast(*align(1) u32, &inst); - const arrayPtr = @ptrCast(*align(1) u32, &inst.x); + const structPtr = @as(*align(1) u32, @ptrCast(&inst)); + const arrayPtr = @as(*align(1) u32, @ptrCast(&inst.x)); inst.x[0] = 0xFE; inst.x[2] = 0xBE; try testing.expectEqual(bigToNativeEndian(u32, 0xFE00BE00), structPtr.*); @@ -124,8 +124,8 @@ fn shuffle(ptr: usize, comptime From: type, comptime To: type) usize { @compileError("Mismatched sizes! " ++ @typeName(From) ++ " and " ++ @typeName(To) ++ " must have the same size!"); const array_len = @divExact(ptr_size, @sizeOf(From)); var result: usize = 0; - const pSource = @ptrCast(*align(1) const [array_len]From, &ptr); - const pResult = @ptrCast(*align(1) [array_len]To, &result); + const pSource = @as(*align(1) const [array_len]From, @ptrCast(&ptr)); + const pResult = @as(*align(1) [array_len]To, @ptrCast(&result)); var i: usize = 0; while (i < array_len) : (i += 1) { inline for (@typeInfo(To).Struct.fields) |f| { @@ -136,8 +136,8 @@ fn shuffle(ptr: usize, comptime From: type, comptime To: type) usize { } fn doTypePunBitsTest(as_bits: *Bits) !void { - const as_u32 = @ptrCast(*align(1) u32, as_bits); - const as_bytes = @ptrCast(*[4]u8, as_bits); + const as_u32 = @as(*align(1) u32, @ptrCast(as_bits)); + const as_bytes = @as(*[4]u8, @ptrCast(as_bits)); as_u32.* = bigToNativeEndian(u32, 0xB0A7DEED); try testing.expectEqual(@as(u1, 0x00), as_bits.p0); try testing.expectEqual(@as(u4, 0x08), as_bits.p1); @@ -176,7 +176,7 @@ test "type pun bits" { comptime { var v: u32 = undefined; - try doTypePunBitsTest(@ptrCast(*Bits, &v)); + try doTypePunBitsTest(@as(*Bits, @ptrCast(&v))); } } @@ -194,7 +194,7 @@ test "basic pointer preservation" { comptime { const lazy_address = @intFromPtr(&imports.global_u32); try testing.expectEqual(@intFromPtr(&imports.global_u32), lazy_address); - try testing.expectEqual(&imports.global_u32, @ptrFromInt(*u32, lazy_address)); + try testing.expectEqual(&imports.global_u32, @as(*u32, @ptrFromInt(lazy_address))); } } @@ -207,8 +207,8 @@ test "byte copy preserves linker value" { const ct_value = comptime blk: { const lazy = &imports.global_u32; var result: *u32 = undefined; - const pSource = @ptrCast(*const [ptr_size]u8, &lazy); - const pResult = @ptrCast(*[ptr_size]u8, &result); + const pSource = @as(*const [ptr_size]u8, @ptrCast(&lazy)); + const pResult = @as(*[ptr_size]u8, @ptrCast(&result)); var i: usize = 0; while (i < ptr_size) : (i += 1) { pResult[i] = pSource[i]; @@ -230,8 +230,8 @@ test "unordered byte copy preserves linker value" { const ct_value = comptime blk: { const lazy = &imports.global_u32; var result: *u32 = undefined; - const pSource = @ptrCast(*const [ptr_size]u8, &lazy); - const pResult = @ptrCast(*[ptr_size]u8, &result); + const pSource = @as(*const [ptr_size]u8, @ptrCast(&lazy)); + const pResult = @as(*[ptr_size]u8, @ptrCast(&result)); if (ptr_size > 8) @compileError("This array needs to be expanded for platform with very big pointers"); const shuffled_indices = [_]usize{ 4, 5, 2, 6, 1, 3, 0, 7 }; for (shuffled_indices) |i| { @@ -274,12 +274,12 @@ test "dance on linker values" { arr[0] = @intFromPtr(&imports.global_u32); arr[1] = @intFromPtr(&imports.global_u32); - const weird_ptr = @ptrCast([*]Bits, @ptrCast([*]u8, &arr) + @sizeOf(usize) - 3); + const weird_ptr = @as([*]Bits, @ptrCast(@as([*]u8, @ptrCast(&arr)) + @sizeOf(usize) - 3)); try doTypePunBitsTest(&weird_ptr[0]); if (ptr_size > @sizeOf(Bits)) try doTypePunBitsTest(&weird_ptr[1]); - var arr_bytes = @ptrCast(*[2][ptr_size]u8, &arr); + var arr_bytes = @as(*[2][ptr_size]u8, @ptrCast(&arr)); var rebuilt_bytes: [ptr_size]u8 = undefined; var i: usize = 0; @@ -290,7 +290,7 @@ test "dance on linker values" { rebuilt_bytes[i] = arr_bytes[1][i]; } - try testing.expectEqual(&imports.global_u32, @ptrFromInt(*u32, @bitCast(usize, rebuilt_bytes))); + try testing.expectEqual(&imports.global_u32, @as(*u32, @ptrFromInt(@as(usize, @bitCast(rebuilt_bytes))))); } } @@ -316,7 +316,7 @@ test "offset array ptr by element size" { try testing.expectEqual(@intFromPtr(&arr[2]), address + 2 * @sizeOf(VirtualStruct)); try testing.expectEqual(@intFromPtr(&arr[3]), address + @sizeOf(VirtualStruct) * 3); - const secondElement = @ptrFromInt(*VirtualStruct, @intFromPtr(&arr[0]) + 2 * @sizeOf(VirtualStruct)); + const secondElement = @as(*VirtualStruct, @ptrFromInt(@intFromPtr(&arr[0]) + 2 * @sizeOf(VirtualStruct))); try testing.expectEqual(bigToNativeEndian(u32, 0x02060a0e), secondElement.x); } } @@ -334,15 +334,15 @@ test "offset instance by field size" { var ptr = @intFromPtr(&inst); ptr -= 4; ptr += @offsetOf(VirtualStruct, "x"); - try testing.expectEqual(@as(u32, 0), @ptrFromInt([*]u32, ptr)[1]); + try testing.expectEqual(@as(u32, 0), @as([*]u32, @ptrFromInt(ptr))[1]); ptr -= @offsetOf(VirtualStruct, "x"); ptr += @offsetOf(VirtualStruct, "y"); - try testing.expectEqual(@as(u32, 1), @ptrFromInt([*]u32, ptr)[1]); + try testing.expectEqual(@as(u32, 1), @as([*]u32, @ptrFromInt(ptr))[1]); ptr = ptr - @offsetOf(VirtualStruct, "y") + @offsetOf(VirtualStruct, "z"); - try testing.expectEqual(@as(u32, 2), @ptrFromInt([*]u32, ptr)[1]); + try testing.expectEqual(@as(u32, 2), @as([*]u32, @ptrFromInt(ptr))[1]); ptr = @intFromPtr(&inst.z) - 4 - @offsetOf(VirtualStruct, "z"); ptr += @offsetOf(VirtualStruct, "w"); - try testing.expectEqual(@as(u32, 3), @ptrFromInt(*u32, ptr + 4).*); + try testing.expectEqual(@as(u32, 3), @as(*u32, @ptrFromInt(ptr + 4)).*); } } @@ -363,13 +363,13 @@ test "offset field ptr by enclosing array element size" { var i: usize = 0; while (i < 4) : (i += 1) { - var ptr: [*]u8 = @ptrCast([*]u8, &arr[0]); + var ptr: [*]u8 = @as([*]u8, @ptrCast(&arr[0])); ptr += i; ptr += @offsetOf(VirtualStruct, "x"); var j: usize = 0; while (j < 4) : (j += 1) { const base = ptr + j * @sizeOf(VirtualStruct); - try testing.expectEqual(@intCast(u8, i * 4 + j), base[0]); + try testing.expectEqual(@as(u8, @intCast(i * 4 + j)), base[0]); } } } @@ -393,7 +393,7 @@ test "accessing reinterpreted memory of parent object" { .c = 2.6, }; const ptr = &x.b[0]; - const b = @ptrCast([*c]const u8, ptr)[5]; + const b = @as([*c]const u8, @ptrCast(ptr))[5]; try testing.expect(b == expected); } } @@ -407,11 +407,11 @@ test "bitcast packed union to integer" { comptime { const a = U{ .x = 1 }; const b = U{ .y = 2 }; - const cast_a = @bitCast(u2, a); - const cast_b = @bitCast(u2, b); + const cast_a = @as(u2, @bitCast(a)); + const cast_b = @as(u2, @bitCast(b)); // truncated because the upper bit is garbage memory that we don't care about - try testing.expectEqual(@as(u1, 1), @truncate(u1, cast_a)); + try testing.expectEqual(@as(u1, 1), @as(u1, @truncate(cast_a))); try testing.expectEqual(@as(u2, 2), cast_b); } } @@ -435,6 +435,6 @@ test "dereference undefined pointer to zero-bit type" { test "type pun extern struct" { const S = extern struct { f: u8 }; comptime var s = S{ .f = 123 }; - @ptrCast(*u8, &s).* = 72; + @as(*u8, @ptrCast(&s)).* = 72; try testing.expectEqual(@as(u8, 72), s.f); } |