http://bugs.gentoo.org/479774

--- a/src/Fl_JPEG_Image.cxx
+++ b/src/Fl_JPEG_Image.cxx
@@ -155,7 +155,7 @@
   
   jpeg_create_decompress(&dinfo);
   jpeg_stdio_src(&dinfo, fp);
-  jpeg_read_header(&dinfo, 1);
+  jpeg_read_header(&dinfo, TRUE);
   
   dinfo.quantize_colors      = (boolean)FALSE;
   dinfo.out_color_space      = JCS_RGB;
@@ -337,7 +337,7 @@
   
   jpeg_create_decompress(&dinfo);
   jpeg_mem_src(&dinfo, data);
-  jpeg_read_header(&dinfo, 1);
+  jpeg_read_header(&dinfo, TRUE);
   
   dinfo.quantize_colors      = (boolean)FALSE;
   dinfo.out_color_space      = JCS_RGB;