--- misc/silgraphite-2.3.1/engine/src/segment/SegmentAux.cpp	2008-08-21 16:24:32.000000000 +0200
+++ misc/build/silgraphite-2.3.1/engine/src/segment/SegmentAux.cpp	2011-02-21 13:22:23.159834368 +0100
@@ -247,7 +247,9 @@
 GlyphSetIterator::reference GlyphSetIterator::operator*() const
 {
 	assert(m_pseg != 0);
-	assert(m_vit != std::vector<int>::const_iterator());
+        // #i116227# the check below is well meant but breaks itself when using stlport with debug facilities
+        // a valid iterator cannot be compared to an empty one in that case
+	// assert(m_vit != std::vector<int>::const_iterator());
 														// in the case of a non-contiguous list
 	return m_pseg->m_prgginf[(*m_vit) - m_pseg->m_isloutGinf0];
 }
--- misc/silgraphite-2.3.1/engine/configure	2021-06-19 15:17:20.741894267 +0200
+++ misc/build/silgraphite-2.3.1/engine/configure	2021-06-19 15:18:16.359429854 +0200
@@ -16877,7 +16877,7 @@
 # (note: the flags here are gcc-specific and may fail with other compilers)
 build_flags=""
 if test "$enable_debug" = yes; then
-  build_flags="$build_flags -O0 -g -Wall -Wno-unknown-pragmas -Wparentheses -Werror"
+  build_flags="$build_flags -O0 -g -Wall -Wno-unknown-pragmas -Wparentheses"
 elif test "$enable_strict" = yes; then
   build_flags="$build_flags -DNDEBUG -Wall -Wno-unknown-pragmas -Wparentheses -Werror"
 else