cut: fix handling of overlapping ranges

This issue was introduced in commit v8.21-43-g3e466ad

* src/cut.c (set_fields): Process all range pairs when merging.
* tests/misc/cut-huge-range.sh: Add a test for this edge case.
Also fix an issue where we could miss reported errors due
to truncation of the 'err' file.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/cut.c b/src/cut.c
index b347b307b..9501b3aa7 100644
--- a/src/cut.c
+++ b/src/cut.c
@@ -496,9 +496,9 @@ set_fields (const char *fieldstr)
           if (rp[j].lo <= rp[i].hi)
             {
               rp[i].hi = MAX (rp[j].hi, rp[i].hi);
-              memmove (rp + j, rp + j + 1,
-                       (n_rp - j - 1) * sizeof (struct range_pair));
-              --n_rp;
+              memmove (rp + j, rp + j + 1, (n_rp - j - 1) * sizeof *rp);
+              n_rp--;
+              j--;
             }
           else
             break;