From 08b73c7cf88179e8439517094409133044d813f1 Mon Sep 17 00:00:00 2001
From: Lee Duncan <lduncan@suse.com>
Date: Feb 11 2021 22:39:26 +0000
Subject: Fix test issue with gcc-11


Test 3.t exercises io_submit() with invalid addresses,
and one test attempted to pass in "-1" as an invalid
pointer. But gcc-11 realizes you cannot take an offset
from an invalid pointer, making it impossible to
compile or run this test:

> sh# make CC=gcc-11 partcheck
> make[1]: Entering directory '/alt/public_software/libaio/src'
> make[1]: Nothing to be done for 'all'.
> make[1]: Leaving directory '/alt/public_software/libaio/src'
> make[1]: Entering directory '/alt/public_software/libaio/harness'
> gcc-11 -Wall -Werror -I../src -g -O2 -DTEST_NAME=\"cases/2.t\" -o cases/2.p main.c ../src/libaio.a -lpthread
> gcc-11 -Wall -Werror -I../src -g -O2 -DTEST_NAME=\"cases/3.t\" -o cases/3.p main.c ../src/libaio.a -lpthread
> In file included from main.c:24:
> cases/3.t: In function ‘test_main’:
> cases/3.t:18:19: error: ‘attempt_io_submit’ accessing 8 bytes in a region of size 0 [-Werror=stringop-overflow=]
>    18 |         status |= attempt_io_submit( io_ctx, 1, (void *)-1, -EFAULT);
>       |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> cases/3.t:18:19: note: referencing argument 3 of type ‘struct iocb **’
> In file included from cases/3.t:5,
>                  from main.c:24:
> cases/aio_setup.h:15:5: note: in a call to function ‘attempt_io_submit’
>    15 | int attempt_io_submit(io_context_t ctx, long nr, struct iocb *ios[], int expect)
>       |     ^~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> make[1]: *** [Makefile:19: cases/3.p] Error 1
> make[1]: Leaving directory '/alt/public_software/libaio/harness'
> make: *** [Makefile:23: partcheck] Error 2

The fix is to remove this one test case, since the compiler now
ensures the running code will never see this case.

Signed-off-by: Lee Duncan <leeman.duncan@gmail.com>

---

diff --git a/harness/cases/3.t b/harness/cases/3.t
index 7773d80..ba669a6 100644
--- a/harness/cases/3.t
+++ b/harness/cases/3.t
@@ -15,7 +15,6 @@ int test_main(void)
 	status |= attempt_io_submit(BAD_CTX, 1,   good_ios, -EINVAL);
 	status |= attempt_io_submit( io_ctx, 0,   good_ios,       0);
 	status |= attempt_io_submit( io_ctx, 1,       NULL, -EFAULT);
-	status |= attempt_io_submit( io_ctx, 1, (void *)-1, -EFAULT);
 	status |= attempt_io_submit( io_ctx, 2,   bad1_ios, -EFAULT);
 	status |= attempt_io_submit( io_ctx, 2,   bad2_ios, -EFAULT);
 	status |= attempt_io_submit( io_ctx, -1,  good_ios, -EINVAL);