Bug 39347 - Assertion when passing delegate of icall method to p/invoke
Summary: Assertion when passing delegate of icall method to p/invoke
Alias: None
Product: Runtime
Classification: Mono
Component: Interop ()
Version: unspecified
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2016-03-04 03:24 UTC by Alex Corrado [MSFT]
Modified: 2016-03-19 12:06 UTC (History)
3 users (show)

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

Test case (493 bytes, text/plain)
2016-03-04 03:24 UTC, Alex Corrado [MSFT]

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Description Alex Corrado [MSFT] 2016-03-04 03:24:16 UTC
Created attachment 15260 [details]
Test case

See attached test case.

When passing a delegate to a p/invoke call, mono crashes with this assertion if the delegate was constructed from an icall:

* Assertion at loader.c:1437, condition `method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL' not met

Look at the call to `mono_lookup_pinvoke_call` here: https://github.com/mono/mono/blob/7452477db341f1c8ec368db491bfe5653a972ce2/mono/metadata/marshal.c#L300 ... note that the guard condition for that is `mono_method_signature (method)->pinvoke`, while the assertion in `mono_lookup_pinvoke_call` checks `method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL'
Comment 1 Zoltan Varga 2016-03-19 12:06:54 UTC
Fixed in mono master c736aba5c94c20e6faad6b736f8e3a834e26d95f.