diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/tail.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/tail.c b/src/tail.c index a2025f3ce..a63329b7b 100644 --- a/src/tail.c +++ b/src/tail.c @@ -55,6 +55,7 @@ #include "system.h" #include "version.h" #include "xstrtol.h" +#include "error.h" /* Disable assertions. Some systems have broken assert macros. */ #define NDEBUG 1 @@ -106,7 +107,6 @@ enum header_mode }; char *xmalloc (); -void error (); int safe_read (); static int file_lines (); @@ -249,13 +249,11 @@ main (argc, argv) if (*optarg == '+') { from_start = 1; - ++optarg; } - else if (*optarg == '-') - ++optarg; - /* FIXME: make sure tmp_long can't be negative. */ s_err = xstrtol (optarg, NULL, 0, &tmp_long, 1); + if (tmp_long < 0) + tmp_long = -tmp_long; n_units = tmp_long; if (s_err != LONGINT_OK) { @@ -401,7 +399,8 @@ tail_file (filename, n_units, filenum) } else if (!S_ISREG (stats.st_mode)) { - error (0, 0, "%s: cannot follow end of non-regular file"); + error (0, 0, "%s: cannot follow end of non-regular file", + filename); errors = 1; } if (errors) |