[Mesa-dev] [PATCH v2 03/29] gallium/aux/util/u_debug_stack.c: Silence -Wunused-result warning

[Gert Wollny]

asprintf is decorated with the attrbute "warn_unused_result", and if the
function call fails, the pointer "temp" will be undefined, but since it is
used later it should contain some usable value.
Test return value of asprintf and assign some save value to "temp" if
the call failed.

Signed-off-by: Gert Wollny <gw.fossdev at gmail.com>
Reviewed-by: Brian Paul <brianp at vmware.com> (v1)
---
 src/gallium/auxiliary/util/u_debug_stack.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/gallium/auxiliary/util/u_debug_stack.c b/src/gallium/auxiliary/util/u_debug_stack.c
index 7013807b6b..f12ef73e91 100644
--- a/src/gallium/auxiliary/util/u_debug_stack.c
+++ b/src/gallium/auxiliary/util/u_debug_stack.c
@@ -90,9 +90,9 @@ symbol_name_cached(unw_cursor_t *cursor, unw_proc_info_t *pip)
          procname[1] = 0;
       }
 
-      asprintf(&name, "%s%s", procname, ret == -UNW_ENOMEM ? "..." : "");
-
-      util_hash_table_set(symbols_hash, addr, (void*)name);
+      if (asprintf(&name, "%s%s", procname, ret == -UNW_ENOMEM ? "..." : "") == -1) 
+         name = "??";
+      util_hash_table_set(symbols_hash, addr, (void*)name);
    }
    mtx_unlock(&symbols_mutex);
 
-- 
2.13.6