File aspell-epmty_file.patch of Package aspell

--- common/convert.cpp.orig
+++ common/convert.cpp
@@ -813,6 +813,7 @@ namespace acommon {
   {
     ToUniLookup lookup;
     void decode(const char * in, int size, FilterCharVector & out) const {
+      if (size == 0) return; // if size == 0 then while loop cause SIGSEGV
       const char * stop = in + size; // this is OK even if size == -1
       while (*in && in != stop) {
         out.append(from_utf8(in, stop));
--- Makefile.am.orig
+++ Makefile.am
@@ -29,8 +29,10 @@ lib_LTLIBRARIES = libaspell.la
 
 if PSPELL_COMPATIBILITY
 lib_LTLIBRARIES += libpspell.la
+libpspell_la_CXXFLAGS = -fvisibility-inlines-hidden
 endif
 
+libaspell_la_CXXFLAGS = -fvisibility-inlines-hidden
 libaspell_la_SOURCES =\
   common/cache.cpp\
   common/string.cpp\
@@ -194,7 +196,7 @@ libaspell_la_SOURCES +=\
 else # not COMPILE_IN_FILTERS
 
 dynamic_optfiles += ${optfiles}
-filter_ldflags = -module -avoid-version
+filter_ldflags = -avoid-version -module -shared -export-dynamic
 
 ### Add name of filter library containing your filter. Name always
 ### must look like lib<filtername>-filter.la see development manual
--- lib5/Makefile.am.orig
+++ lib5/Makefile.am
@@ -1,9 +1,9 @@
-
+AM_CXXFLAGS = -fvisibility-inlines-hidden
 if INCREMENTED_SONAME
 
 lib_LTLIBRARIES = libaspell.la
 libaspell_la_SOURCES = aspell-dummy.cpp
-libaspell_la_LDFLAGS = -version-info 16:0:1
+libaspell_la_LDFLAGS = -no-undefined -version-info 16:0:1
 libaspell_la_LIBADD = ../libaspell.la
 
 if PSPELL_COMPATIBILITY