Bug 3656 - mono_check_corlib_version() isn't sufficient
Summary: mono_check_corlib_version() isn't sufficient
Status: RESOLVED NOT_ON_ROADMAP
Alias: None
Product: Runtime
Classification: Mono
Component: JIT ()
Version: unspecified
Hardware: PC Linux
: --- normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2012-02-27 10:18 UTC by Eric Samsel
Modified: 2012-03-01 22:18 UTC (History)
4 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED NOT_ON_ROADMAP

Description Eric Samsel 2012-02-27 10:18:47 UTC
mono_check_corlib_version() looks like it's intended to catch a mismatch between the mono runtime version and the mono version of the framework libraries. However, at least in the case of 2.10.0 framework libraries and 2.10.2 mono runtime, this check isn't sufficient.

The mono runtime asserts before it gets to the mono_check_corlib_version() call. The problem is that mini_init() -> mono_runtime_init() -> mono_thread_pool_init() -> threadpool_init() -> mono_cq_create() -> mono_cqitem_alloc() occurs before the check, and mono_cqitem_alloc() tries to create an object of type System.MonoCQItem, which was added after 2.10.0.
Comment 1 Zoltan Varga 2012-03-01 22:18:24 UTC
The check needs a fully functional runtime to run so it cannot be ran earlier. It was never intented to catch all cases, just the most common ones.