all: migrate code to new cast builtin syntax

Most of this migration was performed automatically with `zig fmt`. There
were a few exceptions which I had to manually fix:

* `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten
* `@truncate`'s fixup is incorrect for vectors
* Test cases are not formatted, and their error locations change

1 files changed, 9 insertions, 9 deletions

diff --git a/lib/std/process.zig b/lib/std/process.zig
index 05066fa436..28d4bfcb25 100644
--- a/lib/std/process.zig
+++ b/lib/std/process.zig
@@ -68,7 +68,7 @@ pub const EnvMap = struct {
     pub const EnvNameHashContext = struct {
         fn upcase(c: u21) u21 {
             if (c <= std.math.maxInt(u16))
-                return std.os.windows.ntdll.RtlUpcaseUnicodeChar(@intCast(u16, c));
+                return std.os.windows.ntdll.RtlUpcaseUnicodeChar(@as(u16, @intCast(c)));
             return c;
         }
 
@@ -80,9 +80,9 @@ pub const EnvMap = struct {
                 while (it.nextCodepoint()) |cp| {
                     const cp_upper = upcase(cp);
                     h.update(&[_]u8{
-                        @intCast(u8, (cp_upper >> 16) & 0xff),
-                        @intCast(u8, (cp_upper >> 8) & 0xff),
-                        @intCast(u8, (cp_upper >> 0) & 0xff),
+                        @as(u8, @intCast((cp_upper >> 16) & 0xff)),
+                        @as(u8, @intCast((cp_upper >> 8) & 0xff)),
+                        @as(u8, @intCast((cp_upper >> 0) & 0xff)),
                     });
                 }
                 return h.final();
@@ -872,8 +872,8 @@ pub fn argsFree(allocator: Allocator, args_alloc: []const [:0]u8) void {
     for (args_alloc) |arg| {
         total_bytes += @sizeOf([]u8) + arg.len + 1;
     }
-    const unaligned_allocated_buf = @ptrCast([*]const u8, args_alloc.ptr)[0..total_bytes];
-    const aligned_allocated_buf = @alignCast(@alignOf([]u8), unaligned_allocated_buf);
+    const unaligned_allocated_buf = @as([*]const u8, @ptrCast(args_alloc.ptr))[0..total_bytes];
+    const aligned_allocated_buf: []align(@alignOf([]u8)) const u8 = @alignCast(unaligned_allocated_buf);
     return allocator.free(aligned_allocated_buf);
 }
 
@@ -1143,7 +1143,7 @@ pub fn execve(
         } else if (builtin.output_mode == .Exe) {
             // Then we have Zig start code and this works.
             // TODO type-safety for null-termination of `os.environ`.
-            break :m @ptrCast([*:null]const ?[*:0]const u8, os.environ.ptr);
+            break :m @as([*:null]const ?[*:0]const u8, @ptrCast(os.environ.ptr));
         } else {
             // TODO come up with a solution for this.
             @compileError("missing std lib enhancement: std.process.execv implementation has no way to collect the environment variables to forward to the child process");
@@ -1175,7 +1175,7 @@ pub fn totalSystemMemory() TotalSystemMemoryError!usize {
                 error.NameTooLong, error.UnknownName => unreachable,
                 else => return error.UnknownTotalSystemMemory,
             };
-            return @intCast(usize, physmem);
+            return @as(usize, @intCast(physmem));
         },
         .openbsd => {
             const mib: [2]c_int = [_]c_int{
@@ -1192,7 +1192,7 @@ pub fn totalSystemMemory() TotalSystemMemoryError!usize {
                 else => return error.UnknownTotalSystemMemory,
             };
             assert(physmem >= 0);
-            return @bitCast(usize, physmem);
+            return @as(usize, @bitCast(physmem));
         },
         .windows => {
             var sbi: std.os.windows.SYSTEM_BASIC_INFORMATION = undefined;