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perf dwarf-aux: Allow unnamed struct/union/enum 

It's possible some struct/union/enum type don't have type name.  Allow
the empty name after "struct"/"union"/"enum" string rather than fail.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230612234102.3909116-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2023-06-12 16:41:02 -07:00 committed by Arnaldo Carvalho de Melo
parent 3abfcfd847
commit 7f911905ff
1 changed files with 5 additions and 3 deletions
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8
tools/perf/util/dwarf-aux.c
View File

@ -1074,16 +1074,18 @@ int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf)
/* Function pointer */
return strbuf_add(buf, "(function_type)", 15);
} else {
if (!dwarf_diename(&type))
return -ENOENT;
const char *name = dwarf_diename(&type);
if (tag == DW_TAG_union_type)
tmp = "union ";
else if (tag == DW_TAG_structure_type)
tmp = "struct ";
else if (tag == DW_TAG_enumeration_type)
tmp = "enum ";
else if (name == NULL)
return -ENOENT;
/* Write a base name */
return strbuf_addf(buf, "%s%s", tmp, dwarf_diename(&type));
return strbuf_addf(buf, "%s%s", tmp, name ?: "");
}
ret = die_get_typename(&type, buf);
return ret ? ret : strbuf_addstr(buf, tmp);