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102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
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/*
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Copyright 2020 Google LLC
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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 of signed bit-fields; see https://github.com/cc65/cc65/issues/1095
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*/
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#include <stdio.h>
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static unsigned char failures = 0;
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static struct signed_ints {
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signed int a : 3;
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signed int b : 3;
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signed int c : 3;
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} si = {-4, -1, 3};
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static void test_signed_bitfield(void)
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{
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if (si.a >= 0) {
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printf("Got si.a = %d, expected negative.\n", si.a);
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failures++;
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}
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if (si.a != -4) {
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printf("Got si.a = %d, expected -4.\n", si.a);
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failures++;
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}
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if (si.b >= 0) {
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printf("Got si.b = %d, expected negative.\n", si.b);
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failures++;
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}
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if (si.b != -1) {
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printf("Got si.b = %d, expected -1.\n", si.b);
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failures++;
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}
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if (si.b <= 0) {
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printf("Got si.c = %d, expected positive.\n", si.c);
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failures++;
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}
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if (si.c != 3) {
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printf("Got si.c = %d, expected 3.\n", si.c);
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failures++;
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}
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si.a = -3;
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si.b = 1;
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si.c = -2;
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if (si.a >= 0) {
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printf("Got si.a = %d, expected negative.\n", si.a);
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failures++;
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}
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if (si.a != -3) {
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printf("Got si.a = %d, expected -3.\n", si.a);
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failures++;
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}
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if (si.b <= 0) {
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printf("Got si.b = %d, expected positive.\n", si.b);
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failures++;
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}
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if (si.b != 1) {
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printf("Got si.b = %d, expected 1.\n", si.b);
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failures++;
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}
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if (si.b >= 0) {
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printf("Got si.c = %d, expected negative.\n", si.c);
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failures++;
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}
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if (si.c != -2) {
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printf("Got si.c = %d, expected -2.\n", si.c);
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failures++;
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}
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}
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int main(void)
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{
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test_signed_bitfield();
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printf("failures: %u\n", failures);
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return failures;
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}
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