perf probe: Allow of casting an array of char to string

Before casting a type of a variable to string, convert_variable_type()
confirms that the type is a pointer or an array. then if it is a pointer
to char, it is casted to string.  but in case of an array of char, it
isn't

Signed-off-by: H.C. Lee <hyc.lee@gmail.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/CANFS6bb75e8a_UtyAD9yF73hfXDy0N8tSjDz=a+Vna=Y8ORMHg@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 1daf5c14e751bf954e5665e1caa179b191cbd361..be0329394d5639f77644d8a9079dd6ceb4f27a73 100644 (file)
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -413,12 +413,12 @@ static int convert_variable_type(Dwarf_Die *vr_die,
                                   dwarf_diename(vr_die), dwarf_diename(&type));
                        return -EINVAL;
                }
+               if (die_get_real_type(&type, &type) == NULL) {
+                       pr_warning("Failed to get a type"
+                                  " information.\n");
+                       return -ENOENT;
+               }
                if (ret == DW_TAG_pointer_type) {
-                       if (die_get_real_type(&type, &type) == NULL) {
-                               pr_warning("Failed to get a type"
-                                          " information.\n");
-                               return -ENOENT;
-                       }
                        while (*ref_ptr)
                                ref_ptr = &(*ref_ptr)->next;
                        /* Add new reference with offset +0 */