(__argp_fmtstream_update): Fix coredump

diff --git a/lib/argp-fmtstream.c b/lib/argp-fmtstream.c
index 0ba19c5aeb7bef140b8cf44844b9a0d3160f743e..0dd9256f570adfb6eed734d465e60f0fa9bb43f0 100644 (file)
--- a/lib/argp-fmtstream.c
+++ b/lib/argp-fmtstream.c
@@ -246,9 +246,10 @@ __argp_fmtstream_update (argp_fmtstream_t fs)
                 Oh well.  Put it on an overlong line by itself.  */
              p = buf + (r + 1 - fs->point_col);
              /* Find the end of the long word.  */
-             do
-               ++p;
-             while (p < nl && !isblank (*p));
+             if (p < nl)
+               do
+                 ++p;
+               while (p < nl && !isblank (*p));
              if (p == nl)
                {
                  /* It already ends a line.  No fussing required.  */