commit 96bab3556113e6684d4a34759042330cdcaba4ff
Author: Daniel Swanson <popcorn.tomato.dude@gmail.com>
Date:   Fri Jun 18 10:23:27 2021 -0500

    InputFile block reading should respect null flush
    
    (really this is an error state either way, but I think this is
    slightly more correct)

diff --git a/lttoolbox/input_file.cc b/lttoolbox/input_file.cc
index 2bd9a8f..307c8c9 100644
--- a/lttoolbox/input_file.cc
+++ b/lttoolbox/input_file.cc
@@ -160,6 +160,9 @@ InputFile::readBlock(const UChar32 start, const UChar32 end)
   UChar32 c = 0;
   while (c != end && !eof()) {
     c = get();
+    if (c == '\0') {
+      break;
+    }
     ret += c;
     if (c == '\\') {
       ret += get();
@@ -177,6 +180,9 @@ InputFile::finishWBlank()
   UChar32 c = 0;
   while (!eof()) {
     c = get();
+    if (c == '\0') {
+      break;
+    }
     ret += c;
     if (c == '\\') {
       ret += get();