diff --git a/src/Magnum/GL/Test/GlobalStateAcrossLibrariesGLTest.cpp b/src/Magnum/GL/Test/GlobalStateAcrossLibrariesGLTest.cpp
index faa32bd81..18899d583 100644
--- a/src/Magnum/GL/Test/GlobalStateAcrossLibrariesGLTest.cpp
+++ b/src/Magnum/GL/Test/GlobalStateAcrossLibrariesGLTest.cpp
@@ -33,14 +33,16 @@ namespace Magnum { namespace GL { namespace Test { namespace {
 struct GlobalStateAcrossLibrariesGLTest: OpenGLTester {
     explicit GlobalStateAcrossLibrariesGLTest();
 
-    void test();
+    void magnumContext();
+    void functionPointers();
 };
 
 GlobalStateAcrossLibrariesGLTest::GlobalStateAcrossLibrariesGLTest() {
-    addTests({&GlobalStateAcrossLibrariesGLTest::test});
+    addTests({&GlobalStateAcrossLibrariesGLTest::magnumContext,
+              &GlobalStateAcrossLibrariesGLTest::functionPointers});
 }
 
-void GlobalStateAcrossLibrariesGLTest::test() {
+void GlobalStateAcrossLibrariesGLTest::magnumContext() {
     #if defined(MAGNUM_BUILD_STATIC_UNIQUE_GLOBALS) && !defined(MAGNUM_BUILD_STATIC)
     CORRADE_VERIFY(!"MAGNUM_BUILD_STATIC_UNIQUE_GLOBALS enabled but MAGNUM_BUILD_STATIC not");
     #endif
@@ -55,6 +57,27 @@ void GlobalStateAcrossLibrariesGLTest::test() {
     }
 }
 
+void GlobalStateAcrossLibrariesGLTest::functionPointers() {
+    #if defined(MAGNUM_BUILD_STATIC_UNIQUE_GLOBALS) && !defined(MAGNUM_BUILD_STATIC)
+    CORRADE_VERIFY(!"MAGNUM_BUILD_STATIC_UNIQUE_GLOBALS enabled but MAGNUM_BUILD_STATIC not");
+    #endif
+
+    CORRADE_VERIFY(glCreateProgram);
+
+    {
+        #ifndef MAGNUM_BUILD_STATIC_UNIQUE_GLOBALS
+        CORRADE_EXPECT_FAIL("MAGNUM_BUILD_STATIC_UNIQUE_GLOBALS not enabled.");
+        #endif
+        /* Annotating the flextGL global with __attribute__((weak)) makes
+           static builds crash on startup due to a null function pointer call.
+           This is because even the GL 1.0 / 1.1 function pointers are accessed
+           through this struct and somehow the weak symbol makes the struct all
+           nulls. Not sure how to proceed. */
+        CORRADE_EXPECT_FAIL("Deduplication of global GL function pointers across shared libraries isn't implemented yet.");
+        CORRADE_COMPARE(createProgramInALibrary(), reinterpret_cast<void*>(glCreateProgram));
+    }
+}
+
 }}}}
 
 CORRADE_TEST_MAIN(Magnum::GL::Test::GlobalStateAcrossLibrariesGLTest)
diff --git a/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.cpp b/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.cpp
index 9f102c33c..2afb6a0d9 100644
--- a/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.cpp
+++ b/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.cpp
@@ -34,4 +34,8 @@ GL::Context* currentContextInALibrary() {
     return &GL::Context::current();
 }
 
+void* createProgramInALibrary() {
+    return reinterpret_cast<void*>(glCreateProgram);
+}
+
 }}}
diff --git a/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.h b/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.h
index aa4afda1a..a6ee82369 100644
--- a/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.h
+++ b/src/Magnum/GL/Test/GlobalStateAcrossLibrariesLibrary.h
@@ -38,6 +38,7 @@
 namespace Magnum { namespace GL { namespace Test {
 
 MAGNUM_GLOBALSTATEACROSSLIBRARIESLIBRARY_EXPORT GL::Context* currentContextInALibrary();
+MAGNUM_GLOBALSTATEACROSSLIBRARIESLIBRARY_EXPORT void* createProgramInALibrary();
 
 }}}