Follow-up Comment #2, bug #57277 (project findutils):
Will this patch, that uses the same technique as canonicalize-lgpl.c, work? I
can't test it, because I don't have a GCC 10 installed.
diff --git a/tests/test-canonicalize-lgpl.c b/tests/test-canonicalize-lgpl.c
index 4ce06e4..d9a9773 100644
--- a/tests/test-canonicalize-lgpl.c
+++ b/tests/test-canonicalize-lgpl.c
@@ -16,6 +16,10 @@
/* Written by Bruno Haible <br...@clisp.org>, 2007. */
+/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise
the
+ undefined-behaviour of GCC or clang may let the test with null_ptr crash.
*/
+#define _GL_ARG_NONNULL(params)
+
#include <config.h>
#include <stdlib.h>
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