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2006-06-14 Jakub Jelinek <jakub@redhat.com> [BZ #2766] * misc/insremque.c (insque): Handle prev == NULL. * misc/Makefile (tests): Add tst-insremque. * misc/tst-insremque.c: New test.
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
#include <search.h>
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#include <stdio.h>
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#include <string.h>
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#define CHECK(cond) \
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do \
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if (! (cond)) \
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{ \
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printf ("Condition " #cond " not true on line %d\n", __LINE__); \
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ret = 1; \
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} \
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while (0)
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static int
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do_test (void)
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{
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struct qelem elements[4];
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int ret = 0;
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/* Linear list. */
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memset (elements, 0xff, sizeof (elements));
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insque (&elements[0], NULL);
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remque (&elements[0]);
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insque (&elements[0], NULL);
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insque (&elements[2], &elements[0]);
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insque (&elements[1], &elements[0]);
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insque (&elements[3], &elements[2]);
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remque (&elements[2]);
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insque (&elements[2], &elements[0]);
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CHECK (elements[0].q_back == NULL);
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CHECK (elements[0].q_forw == &elements[2]);
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CHECK (elements[1].q_back == &elements[2]);
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CHECK (elements[1].q_forw == &elements[3]);
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CHECK (elements[2].q_back == &elements[0]);
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CHECK (elements[2].q_forw == &elements[1]);
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CHECK (elements[3].q_back == &elements[1]);
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CHECK (elements[3].q_forw == NULL);
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/* Circular list. */
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memset (elements, 0xff, sizeof (elements));
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elements[0].q_back = &elements[0];
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elements[0].q_forw = &elements[0];
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insque (&elements[2], &elements[0]);
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insque (&elements[1], &elements[0]);
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insque (&elements[3], &elements[2]);
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remque (&elements[2]);
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insque (&elements[2], &elements[0]);
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CHECK (elements[0].q_back == &elements[3]);
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CHECK (elements[0].q_forw == &elements[2]);
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CHECK (elements[1].q_back == &elements[2]);
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CHECK (elements[1].q_forw == &elements[3]);
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CHECK (elements[2].q_back == &elements[0]);
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CHECK (elements[2].q_forw == &elements[1]);
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CHECK (elements[3].q_back == &elements[1]);
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CHECK (elements[3].q_forw == &elements[0]);
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return ret;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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