diff -r ff04b71bf6f1 -r fc54d27e58d8 make/launcher/Launcher-jdk.pack.gmk
--- a/make/launcher/Launcher-jdk.pack.gmk	Mon Dec 03 22:27:24 2018 -0800
+++ b/make/launcher/Launcher-jdk.pack.gmk	Tue Dec 04 09:08:03 2018 +0100
@@ -39,7 +39,7 @@
 # On Mac, we have always exported all symbols, probably due to oversight
 # and/or misunderstanding. To emulate this, don't hide any symbols
 # by default.
-# On AIX/xlc we need at least xlc 13.1 for the symbol hiding
+# On AIX/xlc we need at least xlc 13.1 for the symbol hiding (see JDK-8214063)
 # Also provide an override for non-conformant libraries.
 ifeq ($(TOOLCHAIN_TYPE), gcc)
   CXXFLAGS_JDKEXE += -fvisibility=hidden
@@ -50,10 +50,6 @@
   endif
 else ifeq ($(TOOLCHAIN_TYPE), solstudio)
   CXXFLAGS_JDKEXE += -xldscope=hidden
-else ifeq ($(TOOLCHAIN_TYPE), xlc)
-  ifneq ($(CC_VERSION_NUMBER), 12.1)
-    CXXFLAGS_JDKEXE += -qvisibility=hidden
-  endif
 endif
 
 UNPACKEXE_SRC := $(TOPDIR)/src/jdk.pack/share/native/common-unpack \