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73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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Copyright 2020 The cc65 Authors
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/*
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Tests bit-field bug. https://github.com/cc65/cc65/issues/1332
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*/
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#include <stdio.h>
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#include <string.h>
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static unsigned char failures = 0;
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static const struct bitfield {
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unsigned lsb : 1;
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unsigned pad : 14;
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unsigned msb : 1;
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} b = {1, 0, 1};
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static unsigned v;
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void test_if_val (void)
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{
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/* Gets appropriate garbage (0x12) into .X so the test fails. */
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v = 0x1234;
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if (b.msb == 1) {
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fprintf (stderr, "if (msb == 1) OK\n");
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} else {
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fprintf (stderr, "if (msb == 1) FAILED\n");
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failures++;
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}
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}
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void test_sprintf (void)
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/* This test case is similar to the original bug report. */
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{
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char buf[10];
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snprintf (buf, sizeof (buf), "%u", b.msb);
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if (strcmp (buf, "1") != 0) {
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fprintf (stderr, "Expected: sprintf (msb) == \"1\", got: %s\n", buf);
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failures++;
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} else {
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fprintf (stderr, "sprintf (msb) OK\n");
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}
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}
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int main (void)
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{
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test_if_val ();
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test_sprintf ();
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printf ("failures: %u\n", failures);
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return failures;
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}
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