motiejus/zig
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variable initializations are now mandatory

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use `undefined` if you want uninitialized memory
This commit is contained in:
Andrew Kelley
2016-01-25 23:56:46 -07:00
parent b215a3e0b6
commit 4e43973413
8 changed files with 29 additions and 32 deletions
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30
test/run_tests.cpp
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@@ -344,7 +344,7 @@ pub fn main(args: [][]u8) -> %void {
import "std.zig";
pub fn main(args: [][]u8) -> %void {
var array: [4]void;
var array: [4]void = undefined;
array[0] = void{};
array[1] = array[2];
if (@sizeof(@typeof(array)) != 0) {
@@ -377,7 +377,7 @@ pub fn main(args: [][]u8) -> %void {
import "std.zig";
pub fn main(args: [][]u8) -> %void {
var array : [5]i32;
var array : [5]i32 = undefined;
var i : i32 = 0;
while (i < 5) {
@@ -613,7 +613,7 @@ export fn main(argc: c_int, argv: &&u8) -> c_int {
import "std.zig";
pub fn main(args: [][]u8) -> %void {
var foo : Foo;
var foo : Foo = undefined;
@memset(&foo, 0, @sizeof(Foo));
foo.a += 1;
foo.b = foo.a == 1;
@@ -649,10 +649,10 @@ struct Val {
x: i32,
}
fn test_point_to_self() {
var root : Node;
var root : Node = undefined;
root.val.x = 1;
var node : Node;
var node : Node = undefined;
node.next = &root;
node.val.x = 2;
@@ -663,8 +663,8 @@ fn test_point_to_self() {
}
}
fn test_byval_assign() {
var foo1 : Foo;
var foo2 : Foo;
var foo1 : Foo = undefined;
var foo2 : Foo = undefined;
foo1.a = 1234;
@@ -829,7 +829,7 @@ import "std.zig";
const ARRAY_SIZE : i8 = 20;
pub fn main(args: [][]u8) -> %void {
var array : [ARRAY_SIZE]u8;
var array : [ARRAY_SIZE]u8 = undefined;
%%stdout.print_u64(@sizeof(@typeof(array)));
%%stdout.printf("\n");
}
@@ -924,7 +924,7 @@ pub fn main(args: [][]u8) -> %void {
add_simple_case("slicing", R"SOURCE(
import "std.zig";
pub fn main(args: [][]u8) -> %void {
var array : [20]i32;
var array : [20]i32 = undefined;
array[5] = 1234;
@@ -969,7 +969,7 @@ fn f(c: u8) -> u8 {
add_simple_case("overflow intrinsics", R"SOURCE(
import "std.zig";
pub fn main(args: [][]u8) -> %void {
var result: u8;
var result: u8 = undefined;
if (!@add_with_overflow(u8, 250, 100, &result)) {
%%stdout.printf("BAD\n");
}
@@ -986,8 +986,8 @@ pub fn main(args: [][]u8) -> %void {
add_simple_case("memcpy and memset intrinsics", R"SOURCE(
import "std.zig";
pub fn main(args: [][]u8) -> %void {
var foo : [20]u8;
var bar : [20]u8;
var foo : [20]u8 = undefined;
var bar : [20]u8 = undefined;
@memset(foo.ptr, 'A', foo.len);
@memcpy(bar.ptr, foo.ptr, bar.len);
@@ -1475,7 +1475,7 @@ fn f() {
add_compile_fail_case("array access errors", R"SOURCE(
fn f() {
var bad : bool;
var bad : bool = undefined;
i[i] = i[i];
bad[bad] = bad[bad];
}
@@ -1521,7 +1521,7 @@ struct C { a : A, }
add_compile_fail_case("invalid struct field", R"SOURCE(
struct A { x : i32, }
fn f() {
var a : A;
var a : A = undefined;
a.foo = 1;
const y = a.bar;
}
@@ -1652,7 +1652,7 @@ struct Foo {}
struct Bar {}
fn f(Foo: i32) {
var Bar : i32;
var Bar : i32 = undefined;
}
)SOURCE", 2, ".tmp_source.zig:5:6: error: variable shadows type 'Foo'",
".tmp_source.zig:6:5: error: variable shadows type 'Bar'");