Bug 8663 - Unexpected CS1061 (... does not contain a definition for ...)
Summary: Unexpected CS1061 (... does not contain a definition for ...)
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: unspecified
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Marek Safar
Depends on:
Reported: 2012-11-29 12:42 UTC by Julian Tibble
Modified: 2012-11-30 07:34 UTC (History)
1 user (show)

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

Source file that does not compile (375 bytes, application/octet-stream)
2012-11-29 12:42 UTC, Julian Tibble

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Description Julian Tibble 2012-11-29 12:42:41 UTC
Created attachment 3027 [details]
Source file that does not compile

The source file attached to this bug does not compile. The output is:

$ dmcs test2.cs 
test2.cs(15,22): error CS1061: Type `System.Collections.Generic.LinkedList<int>' does not contain a definition for `Add' and no extension method `Add' of type `System.Collections.Generic.LinkedList<int>' could be found (are you missing a using directive or an assembly reference?)
/Library/Frameworks/Mono.framework/Versions/2.10.9/lib/mono/gac/System/ (Location of the symbol related to previous error)
Compilation failed: 1 error(s), 0 warnings

I believe it should compile, because LinkedList does have an Add method - (as demonstrated by commenting out the last line of code, compiling, and running the example).
Comment 1 Marek Safar 2012-11-30 07:34:43 UTC
This is because LinkedList implements the interface explicitly. See feature called explicit interface implementation.