bug#46048: split -n K/N loses data, sum of output files is smaller than input file.

[Pádraig Brady]

On 24/01/2021 16:52, Pádraig Brady wrote:

diff --git a/src/split.c b/src/split.c
index 0660da13f..6aa8d50e9 100644
--- a/src/split.c
+++ b/src/split.c
@@ -1001,7 +1001,7 @@ bytes_chunk_extract (uintmax_t k, uintmax_t n, char *buf, 
size_t bufsize,
       }
     else
       {
-      if (lseek (STDIN_FILENO, start, SEEK_CUR) < 0)
+      if (lseek (STDIN_FILENO, start, SEEK_SET) < 0)
           die (EXIT_FAILURE, errno, "%s", quotef (infile));
         initial_read = SIZE_MAX;
       }

The same adjustment is needed in lines_chunk_split()
I'll add a test also.

cheers,
Pádraig