std: fix compile errors caught by stage2 AstGen

 * `comptime const` is redundant
 * don't use `extern enum`; specify a tag type.
   `extern enum` is only when you need tags to alias. But aliasing tags
   is a smell. I will be making a proposal shortly to remove `extern enum`
   from the language.
 * there is no such thing as `packed enum`.
 * instead of `catch |_|`, omit the capture entirely.
 * unused function definition with missing parameter name
 * using `try` outside of a function or test

1 files changed, 6 insertions, 6 deletions

diff --git a/lib/std/crypto/utils.zig b/lib/std/crypto/utils.zig
index 08271ac9f4..4e02092ed8 100644
--- a/lib/std/crypto/utils.zig
+++ b/lib/std/crypto/utils.zig
@@ -16,9 +16,9 @@ pub fn timingSafeEql(comptime T: type, a: T, b: T) bool {
             for (a) |x, i| {
                 acc |= x ^ b[i];
             }
-            comptime const s = @typeInfo(C).Int.bits;
-            comptime const Cu = std.meta.Int(.unsigned, s);
-            comptime const Cext = std.meta.Int(.unsigned, s + 1);
+            const s = @typeInfo(C).Int.bits;
+            const Cu = std.meta.Int(.unsigned, s);
+            const Cext = std.meta.Int(.unsigned, s + 1);
             return @bitCast(bool, @truncate(u1, (@as(Cext, @bitCast(Cu, acc)) -% 1) >> s));
         },
         .Vector => |info| {
@@ -27,9 +27,9 @@ pub fn timingSafeEql(comptime T: type, a: T, b: T) bool {
                 @compileError("Elements to be compared must be integers");
             }
             const acc = @reduce(.Or, a ^ b);
-            comptime const s = @typeInfo(C).Int.bits;
-            comptime const Cu = std.meta.Int(.unsigned, s);
-            comptime const Cext = std.meta.Int(.unsigned, s + 1);
+            const s = @typeInfo(C).Int.bits;
+            const Cu = std.meta.Int(.unsigned, s);
+            const Cext = std.meta.Int(.unsigned, s + 1);
             return @bitCast(bool, @truncate(u1, (@as(Cext, @bitCast(Cu, acc)) -% 1) >> s));
         },
         else => {