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GHC panics when compiling code with an annotation and linking with an archive (a .a file). I think this is the same as #9438, but I have a really simple test case consisting of the following two files:

// add.c
int add2(int x, int y) { return x + y; }

-- app.hs
{-# ANN module () #-}

main :: IO ()
main = return ()

First I make an archive:

$ gcc -c add.c -o add.o
$ ar libadd.a add.o

And then the following fails:

$ ghc -ladd -L. app.hs
[1 of 1] Compiling Main             ( app.hs, app.o )
ghc: panic! (the 'impossible' happened)
  (GHC version 8.2.2 for x86_64-apple-darwin):
	Loading archives not supported

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

make: *** [app] Error 1

The attached tar.gz has these source files and a Makefile to run the above. I've tested it on OS X 10.11 and Linux, both with GHC 8.2.2, and the behavior is the same.

Trac metadata

Trac field	Value
Version	8.2.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
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