Compiler panic involving casts

[marcs-feh]

Context

I'm currently making set of custom bindings of the popular library FreeType2 and as I was porting its types to more odin-friendly structures I've stumbled upon a compiler bug

Odin:    dev-2025-01
OS:      Arch Linux, Linux 6.6.56-1-lts
CPU:     AMD Ryzen 3 3200G with Radeon Vega Graphics    
RAM:     15922 MiB
Backend: LLVM 18.1.6

Expected Behavior

Should ideally work as the values can be bit-wise converted and are known at compile time. But a proper compiler error is also acceptable. Originally I tried using a transmute but that caused a compiler message about the value not being constant.

Current Behavior

The compiler panics

Failure Information (for bugs)

Please help provide information about the failure if this is a bug. If it is not a bug, please remove the rest of this template.

Steps to Reproduce

package bug

Encoding :: enum u32 {
   NONE = 0,
   MS_SYMBOL = cast(u32)[4]u8{'s', 'y', 'm', 'b'},
   UNICODE   = cast(u32)[4]u8{'u', 'n', 'i', 'c'},

   SJIS      = cast(u32)[4]u8{'s', 'j', 'i', 's'},
   PRC       = cast(u32)[4]u8{'g', 'b', ' ', ' '},
   BIG5      = cast(u32)[4]u8{'b', 'i', 'g', '5'},
   WANSUNG   = cast(u32)[4]u8{'w', 'a', 'n', 's'},
   JOHAB     = cast(u32)[4]u8{'j', 'o', 'h', 'a'},

    // For backward compatibility
    GB2312     = PRC,
    MS_SJIS    = SJIS,
    MS_GB2312  = PRC,
    MS_BIG5    = BIG5,
    MS_WANSUNG = WANSUNG,
    MS_JOHAB   = JOHAB,

    ADOBE_STANDARD = cast(u32)[4]u8{'A', 'D', 'O', 'B'},
    ADOBE_EXPERT   = cast(u32)[4]u8{'A', 'D', 'B', 'E'},
    ADOBE_CUSTOM   = cast(u32)[4]u8{'A', 'D', 'B', 'C'},
    ADOBE_LATIN_1  = cast(u32)[4]u8{'l', 'a', 't', '1'},

    OLD_LATIN_2 = cast(u32)[4]u8{ 'l', 'a', 't', '2'},

    APPLE_ROMAN = cast(u32)[4]u8{ 'a', 'r', 'm', 'n'},
}

Failure Logs

src/exact_value.cpp(1020): Panic: Invalid comparison

Edit: I copied the older version of the code, the update one still presents the same problem though.