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-rw-r--r--elf/dl-lookup.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index f85aa37..63a525e 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -332,6 +332,18 @@ _dl_lookup_versioned_symbol_skip (const char *undef_name,
reference_name, version, skip_map, 0))
break;
+ if (current_value.s == NULL &&
+ (*ref == NULL || ELFW(ST_BIND) ((*ref)->st_info) != STB_WEAK))
+ {
+ /* We could find no value for a strong reference. */
+ static const char msg[] = "undefined symbol: ";
+ const size_t len = strlen (undef_name);
+ char buf[sizeof msg + len];
+ memcpy (buf, msg, sizeof msg - 1);
+ memcpy (&buf[sizeof msg - 1], undef_name, len + 1);
+ _dl_signal_error (0, reference_name, buf);
+ }
+
*ref = current_value.s;
return current_value.a;
}