debug font crash - refs #2341

.travis.yml

@@ -52,3 +52,6 @@ before_script:
 
 script:
  - if [[ ${BENCHMARK} != False ]]; then make bench; fi;
+ # install some exotic fonts to ensure we don't crash registering them
+ - sudo apt-get install ttf-*
+ - python -c "import mapnik;mapnik.logger.set_severity(mapnik.severity_type.Debug);mapnik.register_fonts('/usr/share/fonts/');mapnik.register_fonts('/usr/share/fonts/');print '\n'.join(list(mapnik.FontEngine.instance().face_names()))"

src/font_engine_freetype.cpp

@@ -132,6 +132,7 @@ bool freetype_engine::register_font(std::string const& file_name)
 
 bool freetype_engine::register_font_impl(std::string const& file_name, FT_LibraryRec_ * library)
 {
+    MAPNIK_LOG_DEBUG(font_engine_freetype) << "registering: " << file_name;
 #ifdef _WINDOWS
     FILE * file = _wfopen(mapnik::utf8_to_utf16(file_name).c_str(), L"rb");
 #else