bv.arch.intrinsics locked to first seen architecture in tabs

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#8,394 opened on Aug 7, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 52/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Quiet
Tech stack: cpp, python
Domain: desktop, reverse-engineering

Research direction

Reproduce the issue by opening binary views with different architectures in separate tabs and checking bv.arch and len(bv.arch.intrinsics) in the built-in Python interpreter. Trace how the active tab supplies bv.arch and its intrinsics; done means switching tabs updates both values to the associated binary view's architecture.

Written by the indexing model from the issue text.

Description

Version and Platform (required):

Binary Ninja Version: 5.4.10292-dev Ultimate
OS: MacOS
OS Version: 26.5.2
CPU Architecture: M4 Max

bv.arch.intrinsics is locked to first seen architecture. Opening and switching to another tab with a different architecture binary view keeps the bv.arch.intrinsics from the first seen tab.

Steps To Reproduce:

Open binary view in UI with architecture A
Note the following in the built-in python interpreter:

>>> bv.arch
<arch: x86_64>
>>> len(bv.arch.intrinsics)
11930

Open another binary view in a different tab with architecture B
Note the following in the built-in python interpreter:

>>> bv.arch
<arch: x86_64>
>>> len(bv.arch.intrinsics)
11930

The above was repeated with x86, arm64 and hexagon combinations. Doesn't seem to be specific to an architecture.

Expected Behavior:
bv.arch.intrinsics is updated based on the binary view associated with the open tab.

Dominant language: C++
Stars: 1.3k
Forks: 298
Avg merge: 4d 13h
Merged PRs (30d): 20

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