diff -Nur poppler-0.67.0-bak/poppler/Stream.cc poppler-0.67.0/poppler/Stream.cc
--- poppler-0.67.0-bak/poppler/Stream.cc	2019-04-17 18:06:23.521000000 +0800
+++ poppler-0.67.0/poppler/Stream.cc	2019-04-18 11:40:15.056000000 +0800
@@ -504,6 +504,9 @@
   }
  
   int readChars = str->doGetChars(inputLineSize, inputLine);
+  if (unlikely(readChars == -1)) {
+      readChars = 0;
+  }
   for ( ; readChars < inputLineSize; readChars++) inputLine[readChars] = EOF;
   if (nBits == 1) {
     Guchar *p = inputLine;