basename may modify the string passed to it, so the string should not be
marked const.

Signed-off-by: David Ahern <dsah...@gmail.com>
Cc: Pekka Enberg <penb...@kernel.org>
Cc: Irina Tirdea <irina.tir...@gmail.com>
---
 tools/perf/util/annotate.c |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 51ef69c..04eafd3 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -984,7 +984,8 @@ int symbol__annotate_printf(struct symbol *sym, struct map 
*map, int evidx,
                            int context)
 {
        struct dso *dso = map->dso;
-       const char *filename = dso->long_name, *d_filename;
+       char *filename;
+       const char *d_filename;
        struct annotation *notes = symbol__annotation(sym);
        struct disasm_line *pos, *queue = NULL;
        u64 start = map__rip_2objdump(map, sym->start);
@@ -992,6 +993,10 @@ int symbol__annotate_printf(struct symbol *sym, struct map 
*map, int evidx,
        int more = 0;
        u64 len;
 
+       filename = strdup(dso->long_name);
+       if (!filename)
+               return -ENOMEM;
+
        if (full_paths)
                d_filename = filename;
        else
@@ -1042,6 +1047,8 @@ int symbol__annotate_printf(struct symbol *sym, struct 
map *map, int evidx,
                }
        }
 
+       free(filename);
+
        return more;
 }
 
-- 
1.7.10.1

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