diff --git a/CMakeLists.txt b/CMakeLists.txt
index d6af157..5b7f3bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,8 @@ add_our_addon_library(allegro_ttf
     "${FONT_LINK_WITH};${TTF_LIBRARIES}"
     )
 
+#target_compile_options(allegro_ttf PRIVATE "-fsanitize=undefined" "-lasan")
+
 install_our_headers(${TTF_INCLUDE_FILES})
 
 add_addon(ttf)
diff --git a/glue.c b/glue.c
index 83331a8..ffb9821 100644
--- a/glue.c
+++ b/glue.c
@@ -56,8 +56,8 @@ ALLEGRO_FONT *al_load_ttf_font_f(ALLEGRO_FILE *file,
     const char* cache_text_str =
       al_get_config_value(system_cfg, "ttf", "cache_text");
 		if (!cache_text_str) {
-			ALLEGRO_ERROR("No characters defined in cache_text, no glyphs to bake!\n", filename);
-			FAIL;
+			ALLEGRO_ERROR("No characters defined in cache_text! Using defaults\n");
+			cache_text_str = "fart";
 		}
 
 		// read font file
@@ -71,8 +71,8 @@ ALLEGRO_FONT *al_load_ttf_font_f(ALLEGRO_FILE *file,
 
 			offset += al_fread(file, (uint8_t*)filebuf + offset, chunksize);
 		}
-		sft.xScale = size;
-		sft.yScale = size;
+		sft.xScale = abs(size);
+		sft.yScale = abs(size);
 		sft.font = sft_loadmem(filebuf, filesize);
 		if (!sft.font) {
 			ALLEGRO_ERROR("Can't load font %s: schrift error, is it a valid format?\n", filename);
@@ -80,12 +80,13 @@ ALLEGRO_FONT *al_load_ttf_font_f(ALLEGRO_FILE *file,
 		}
 
 		// convert glyphs into textures todo
-		gtex = al_create_bitmap(2048, 2048);
-		uint16_t woff = 1, hoff = 0;
+		uint16_t woff = 1, hoff = 0, hmax = 2048;
+		gtex = al_create_bitmap(2048, hmax);
 		al_set_target_bitmap(gtex);
 		al_clear_to_color(al_map_rgba(0, 0, 0, 255));
 		unsigned int i = 0;
-		while (cache_text_str[i] != '\0') {
+		const unsigned int len = strlen(cache_text_str);
+		while (i < len) {
 			ALLEGRO_INFO("generating glyph for %c\n", cache_text_str[i]);
 			SFT_Glyph glyph;
 			SFT_GMetrics geom;
@@ -96,14 +97,17 @@ ALLEGRO_FONT *al_load_ttf_font_f(ALLEGRO_FILE *file,
 			ALLEGRO_INFO("got glyph\n");
 			if (0 > sft_gmetrics(&sft, glyph, &geom)) goto glyph_lookup_fail;
 			ALLEGRO_INFO("got geom\n");
+			//if ((hmax - hoff) < geom.minWidth) {
+			//	todo wrap glyphs, grow bmp
+			//}
 			block =
 				al_lock_bitmap_region(gtex, woff, hoff, geom.minWidth, geom.minHeight,
-					ALLEGRO_PIXEL_FORMAT_SINGLE_CHANNEL_8, ALLEGRO_LOCK_WRITEONLY);
+					ALLEGRO_PIXEL_FORMAT_ABGR_8888, ALLEGRO_LOCK_WRITEONLY);
 			ALLEGRO_INFO("got lock\n");
 			img.width = geom.minWidth;
 			img.height = geom.minHeight;
 			img.pixels = block->data;
-			if (0 > sft_render(&sft, glyph, img)) goto glyph_lookup_fail;
+			//if (0 > sft_render(&sft, glyph, img)) goto glyph_lookup_fail; // FIXME UB
 			ALLEGRO_INFO("got raster\n");
 			al_unlock_bitmap(gtex);
 			ALLEGRO_INFO("unlock\n");
@@ -128,8 +132,8 @@ ALLEGRO_FONT *al_load_ttf_font_f(ALLEGRO_FILE *file,
 			i++; i++;
 		}
 		f = al_grab_font_from_bitmap(gtex, ranges_size, ranges);
-    f->dtor_item = _al_register_destructor(_al_dtor_list, "ttf_font", f,
-       (void (*)(void *))al_destroy_font);
+    //f->dtor_item = _al_register_destructor(_al_dtor_list, "ttf_font", f,
+    //   (void (*)(void *))al_destroy_font);
     ALLEGRO_DEBUG("Font %s loaded.\n", filename);
 
 		CLEANUP;