commit 309c4708aca762f57263a66e5bea926fdbfd82eb
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Fri Mar 25 11:16:49 2022 -0300

    elf: Fix wrong fscanf usage on tst-pldd
    
    To take in consideration the extra '\0'.
    
    Checked on x86_64-linux-gnu.
    
    (cherry picked from commit b2cd93fce666fdc8c9a5c64af2741a8a6940ac99)

diff --git a/elf/tst-pldd.c b/elf/tst-pldd.c
index 210ca4d24b8338ab..72b7a99b369a105d 100644
--- a/elf/tst-pldd.c
+++ b/elf/tst-pldd.c
@@ -113,7 +113,8 @@ do_test (void)
     TEST_VERIFY (out != NULL);
 
     /* First line is in the form of <pid>: <full path of executable>  */
-    TEST_COMPARE (fscanf (out, "%u: " STRINPUT (512), &pid, buffer), 2);
+    TEST_COMPARE (fscanf (out, "%u: " STRINPUT (sizeof (buffer) - 1), &pid,
+			  buffer), 2);
 
     TEST_COMPARE (pid, *target_pid_ptr);
     TEST_COMPARE (strcmp (basename (buffer), "tst-pldd"), 0);