Enum representation shows 'foo | 0x10' instead of 'foo & ~0x10'

[comex]

Version and Platform (required):

• Binary Ninja Version: 3.5.4325-dev (41782587)
• OS: macOS
• OS Version: 13.3 (22E252)
• CPU Architecture: arm64

Bug Description:
When Binary Ninja displays the value 0x23 as type enum e : uint8_t { _0x33 = 0x33 }, it shows _0x33 | 0x10, when it should be _0x33 & ~0x10 or just 0x23.

Steps To Reproduce:

1. Load this file which just consists of the bytes 0x23 0x33.
2. Create an enum: enum e : uint8_t { _0x33 = 0x33 }
3. Create a variable of type enum e for each byte.
4. Notice the display:

00000000  enum e data_0 = _0x33 | 0x10  // this is 0x23
00000001  enum e data_1 = _0x33  // this is 0x33

Additional Information:
Question: Is there some way to mark an enum as "not a bitfield" so Binary Ninja only uses named constants if there's an exact match?

[plafosse]

There isn't really a way to mark something as not bitfield. However you can break the logic that makes it infer bitfields by defining something like

enum FOO : int32_t {
  BAR = 1,
  NOT_BITFIELD = 0xFFFFFFFF
  }

[negasora]

Fixed in 3.5.4326-dev