[PATCH v2 08/19] elf: Emit warning if tunable is ill-formatted

[Adhemerval Zanella]

So caller knows that the tunable will be ignored.

Checked on x86_64-linux-gnu.
---
 elf/dl-tunables.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/elf/dl-tunables.c b/elf/dl-tunables.c
index 5d4b8c5bc0..b39c14694c 100644
--- a/elf/dl-tunables.c
+++ b/elf/dl-tunables.c
@@ -236,7 +236,11 @@ parse_tunables (char *valstring)
   struct tunable_toset_t tunables[tunables_list_size];
   int ntunables = parse_tunables_string (valstring, tunables);
   if (ntunables == -1)
-    return;
+    {
+      _dl_error_printf (
+        "ERROR: ld.so: invalid GLIBC_TUNABLES `%s': ignored.\n", valstring);
+      return;
+    }
 
   for (int i = 0; i < ntunables; i++)
     tunable_initialize (tunables[i].t, tunables[i].value);
-- 
2.34.1