diff options
Diffstat (limited to 'src/port/exec.c')
| -rw-r--r-- | src/port/exec.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/port/exec.c b/src/port/exec.c index 17f45563de9..f751e8eae35 100644 --- a/src/port/exec.c +++ b/src/port/exec.c @@ -392,7 +392,7 @@ find_other_exec(const char *argv0, const char *target, if (validate_exec(retpath) != 0) return -1; - snprintf(cmd, sizeof(cmd), "\"%s\" -V 2>%s", retpath, DEVNULL); + snprintf(cmd, sizeof(cmd), "\"%s\" -V", retpath); if (!pipe_read_line(cmd, line, sizeof(line))) return -1; @@ -422,12 +422,21 @@ pipe_read_line(char *cmd, char *line, int maxsize) fflush(stdout); fflush(stderr); + errno = 0; if ((pgver = popen(cmd, "r")) == NULL) + { + perror("popen failure"); return NULL; + } + errno = 0; if (fgets(line, maxsize, pgver) == NULL) { - perror("fgets failure"); + if (feof(pgver)) + fprintf(stderr, "no data was returned by command \"%s\"\n", cmd); + else + perror("fgets failure"); + pclose(pgver); /* no error checking */ return NULL; } |