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-rw-r--r--debug/tst-fortify.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/debug/tst-fortify.c b/debug/tst-fortify.c
index d65a2fe6e1..03c9867714 100644
--- a/debug/tst-fortify.c
+++ b/debug/tst-fortify.c
@@ -1504,6 +1504,11 @@ do_test (void)
       CHK_FAIL_END
 #endif
 
+      /* Bug 29030 regresion check */
+      cp = "HelloWorld";
+      if (mbsrtowcs (NULL, &cp, (size_t)-1, &s) != 10)
+        FAIL ();
+
       cp = "A";
       if (mbstowcs (wenough, cp, 10) != 1
 	  || wcscmp (wenough, L"A") != 0)