perf sort: Use pclose() instead of fclose() on pipe stream

cppcheck message:
[tools/perf/util/sort.c:277]: (error) Mismatching allocation and deallocation: fp

Also fix descriptor leak on error and always initialize the "fp" variable.

Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>
Link: http://lkml.kernel.org/r/1359112354.yZcisNZ4k0@storm
Link: http://lkml.kernel.org/r/2266358.qvDXKLvJ67@storm
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 7ad6239..8333661 100644 (file)
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -249,7 +249,7 @@ static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
                                        size_t size,
                                        unsigned int width __maybe_unused)
 {
-       FILE *fp;
+       FILE *fp = NULL;
        char cmd[PATH_MAX + 2], *path = self->srcline, *nl;
        size_t line_len;
 
@@ -270,7 +270,6 @@ static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
 
        if (getline(&path, &line_len, fp) < 0 || !line_len)
                goto out_ip;
-       fclose(fp);
        self->srcline = strdup(path);
        if (self->srcline == NULL)
                goto out_ip;
@@ -280,8 +279,12 @@ static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
                *nl = '\0';
        path = self->srcline;
 out_path:
+       if (fp)
+               pclose(fp);
        return repsep_snprintf(bf, size, "%s", path);
 out_ip:
+       if (fp)
+               pclose(fp);
        return repsep_snprintf(bf, size, "%-#*llx", BITS_PER_LONG / 4, self->ip);
 }