GNU bug report logs - #38280
FAIL: test-canonicalize-lgpl with GCC 10

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From: =?UTF-8?Q?Martin_Li=c5=a1ka?= <mliska@HIDDEN>
Subject: FAIL: test-canonicalize-lgpl with GCC 10
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The test fails due to:

./gnulib-tests/test-canonicalize-lgpl
test-canonicalize-lgpl.c:74:14: runtime error: null pointer passed as argument 1, which is declared to never be null
     #0 0x40169c in main (/home/marxin/Programming/sed/gnulib-tests/test-canonicalize-lgpl+0x40169c)
     #1 0x7f76821e8e0a in __libc_start_main ../csu/libc-start.c:308
     #2 0x4011f9 in _start (/home/marxin/Programming/sed/gnulib-tests/test-canonicalize-lgpl+0x4011f9

-fsanitize=undefined is used. Problem is that the function has nonnull(1) attribute.

One another issue I see with UBSAN:

$ cat testsuite/debug.log
...
debug.pl: test c10_: stderr mismatch, comparing c10_.3 (expected) and c10_.E (actual)
*** c10_.3	Tue Nov 19 19:42:55 2019
--- c10_.E	Tue Nov 19 19:42:55 2019
***************
*** 0 ****
--- 1 ----
+ sed/debug.c:322:7: runtime error: null pointer passed as argument 1, which is declared to never be null
c11_...
c12...

Thank you,
Martin