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980ef11016
There is a long-known CC attribute cleanup which allows to call a custom cleanup function when an auto-storage variable ceases to exist. We're gonna use it for end-of-loop and leave-locked-block macros. This commit adds a static unit test for this compiler feature to be sure that it really does what we want. We're looking forward to the next ISO C norm where this may finally get a nice syntax and standardization.
83 lines
1.4 KiB
C
83 lines
1.4 KiB
C
/*
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* BIRD Library -- Auto storage attribute cleanup test
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*
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* (c) 2023 Maria Matejka <mq@jmq.cz>
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* (c) 2023 CZ.NIC z.s.p.o.
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include "test/birdtest.h"
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static int order_pos;
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#define CHECK(n) bt_assert(order_pos++ == (n))
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static void
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tacd_cleanup(int *val)
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{
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CHECK(*val);
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}
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static void
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tacd_aux(int pos)
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{
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CHECK(pos + 0);
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UNUSED CLEANUP(tacd_cleanup) int upmost = pos + 18;
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if (order_pos > 0)
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{
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CHECK(pos + 1);
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UNUSED CLEANUP(tacd_cleanup) int inner_if = pos + 3;
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CHECK(pos + 2);
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}
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for (int i=0; i<3; i++)
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{
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CHECK(pos + 4 + 3*i);
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UNUSED CLEANUP(tacd_cleanup) int inner_for = pos + 6 + 3*i;
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CHECK(pos + 5 + 3*i);
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}
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for (
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CLEANUP(tacd_cleanup) int i = pos + 15;
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i < pos + 16; i++)
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{
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CHECK(pos + 13);
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UNUSED CLEANUP(tacd_cleanup) int inner_for = pos + 15;
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CHECK(pos + 14);
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}
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CHECK(pos + 17);
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}
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#define CHECKCNT 19
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static int
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t_attribute_cleanup(void)
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{
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order_pos = 0;
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CHECK(0);
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for (int i=0; i<3; i++)
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{
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CHECK(i*(CHECKCNT+3) + 1);
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UNUSED CLEANUP(tacd_cleanup) int inner_for = (i+1) * (CHECKCNT+3);
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tacd_aux(i*(CHECKCNT+3) + 2);
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CHECK((i+1) * (CHECKCNT+3) - 1);
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}
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CHECK(3 * (CHECKCNT+3) + 1);
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return 1;
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}
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int main(int argc, char **argv)
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{
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bt_init(argc, argv);
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bt_test_suite(t_attribute_cleanup, "Basic usability of the cleanup attribute");
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return bt_exit_value();
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}
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