# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1712433147 -7200
# Node ID 3047b11cc814b7d77c772af3552a11189b8909d1
# Parent  eff120c8f9e3bf38da7de6b28ae296f8b261af46
Fixed the file_data_available result to return zero if the populated span has
somehow become less than the current position in the memory region.

diff -r eff120c8f9e3 -r 3047b11cc814 libfsclient/lib/src/file.cc
--- a/libfsclient/lib/src/file.cc	Tue Apr 02 23:58:31 2024 +0200
+++ b/libfsclient/lib/src/file.cc	Sat Apr 06 21:52:27 2024 +0200
@@ -548,7 +548,10 @@
 
 offset_t file_data_available(file_t *file)
 {
-  return file_populated_span(file) - file->data_current;
+  if (file_populated_span(file) > file->data_current)
+    return file_populated_span(file) - file->data_current;
+  else
+    return 0;
 }
 
 /* Return the current data offset in the region. */