Do not attempt to dlopen PIE objects, which was disallowed with glibc 2.30.

https://gitlab.haskell.org/ghc/ghc/issues/17952
https://sourceware.org/bugzilla/show_bug.cgi?id=24323

Patch submitted upstream:
https://gitlab.haskell.org/ghc/ghc/-/merge_requests/2947

diff --git a/testsuite/tests/dynlibs/Makefile b/testsuite/tests/dynlibs/Makefile
--- a/testsuite/tests/dynlibs/Makefile
+++ b/testsuite/tests/dynlibs/Makefile
@@ -60,6 +60,4 @@ T5373:
 .PHONY: T13702
 T13702:
 	'$(TEST_HC)' -v0 -dynamic -rdynamic -fPIC -pie T13702.hs
-	'$(TEST_HC)' -v0 -dynamic T13702a.hs
-	./T13702  # first make sure executable itself works
-	./T13702a # then try dynamically loading it as library
+	./T13702
diff --git a/testsuite/tests/dynlibs/T13702.hs b/testsuite/tests/dynlibs/T13702.hs
--- a/testsuite/tests/dynlibs/T13702.hs
+++ b/testsuite/tests/dynlibs/T13702.hs
@@ -2,8 +2,3 @@
 
 main :: IO ()
 main = putStrLn "hello world"
-
-foreign export ccall "hello" hello :: IO ()
-
-hello :: IO ()
-hello = putStrLn "hello world again"
diff --git a/testsuite/tests/dynlibs/T13702.stdout b/testsuite/tests/dynlibs/T13702.stdout
--- a/testsuite/tests/dynlibs/T13702.stdout
+++ b/testsuite/tests/dynlibs/T13702.stdout
@@ -1,2 +1 @@
 hello world
-hello world again
diff --git a/testsuite/tests/dynlibs/T13702a.hs b/testsuite/tests/dynlibs/T13702a.hs
deleted file mode 100644
--- a/testsuite/tests/dynlibs/T13702a.hs
+++ /dev/null
@@ -1,12 +0,0 @@
-{-# LANGUAGE ForeignFunctionInterface #-}
-
-import Foreign
-import System.Posix.DynamicLinker
-
-main :: IO ()
-main = do
-    dl <- dlopen "./T13702" [RTLD_NOW]
-    funptr <- dlsym dl "hello" :: IO (FunPtr (IO ()))
-    mkAction funptr
-
-foreign import ccall "dynamic" mkAction :: FunPtr (IO ()) -> IO ()
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<div class='path'>path: <a href='/guix/log/?id=f81e95a39b1315497c1fe16c0eb6bde108e39707'>root</a>/<a href='/guix/log/gnu?id=f81e95a39b1315497c1fe16c0eb6bde108e39707'>gnu</a>/<a href='/guix/log/gnu/system?id=f81e95a39b1315497c1fe16c0eb6bde108e39707'>system</a>/<a href='/guix/log/gnu/system/examples?id=f81e95a39b1315497c1fe16c0eb6bde108e39707'>examples</a>/<a href='/guix/log/gnu/system/examples/docker-image.tmpl?id=f81e95a39b1315497c1fe16c0eb6bde108e39707'>docker-image.tmpl</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/system/examples/docker-image.tmpl?id=f81e95a39b1315497c1fe16c0eb6bde108e39707&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-03-25 23:37:06 +0100'>2019-03-25</span></td><td><a href='/guix/commit/gnu/system/examples/docker-image.tmpl?id=cf848cc0a17a3a58d600116896f6e7abfb0440d4'>accounts: Add default value for the 'home-directory' field of &lt;user-account&gt;.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-01-20 16:11:00 +0200'>2019-01-20</span></td><td><a href='/guix/commit/gnu/system/examples/docker-image.tmpl?id=7194745a16008947f6cf1a3aba0f86e8ca18c2f6'>services: Use guix-service-type.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2018-03-24 03:04:11 +0100'>2018-03-24</span></td><td><a href='/guix/commit/gnu/system/examples/docker-image.tmpl?id=a335f6fcc9aac1afb49a562968107abf7c87e631'>system: Add "guix system docker-image" command.</a><span class='msg-avail'>...</span></td><td>Chris Marusich</td></tr>