mirror of
https://github.com/cc65/cc65.git
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181 lines
4.7 KiB
C
181 lines
4.7 KiB
C
/*
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Copyright 2020-2022 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 signedly 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 that signed bit-fields are indeed signed; see issues below
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- unsigned integer types by default: https://github.com/cc65/cc65/issues/1095
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- char bit-field support: https://github.com/cc65/cc65/issues/1047
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- long bit-field support: https://github.com/cc65/cc65/issues/1131
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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 x : 4;
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signed int y : 10;
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} pi = {-8, -500};
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static void test_signed_int_bitfields (void)
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{
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if (pi.x != -8) {
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printf ("Got pi.x = %ld, expected -8.\n", (long)pi.x);
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failures++;
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}
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if (pi.y != -500) {
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printf ("Got pi.y = %ld, expected -500.\n", (long)pi.y);
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failures++;
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}
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pi.x = -3;
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pi.y = -512;
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if (pi.x != -3) {
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printf ("Got pi.x = %ld, expected -3.\n", (long)pi.x);
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failures++;
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}
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if (pi.y != -512) {
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printf ("Got pi.y = %ld, expected -512.\n", (long)pi.y);
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failures++;
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}
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}
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static struct signed_shorts {
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signed short x : 4;
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signed short y : 10;
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} ps = {-8, -500};
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static void test_signed_short_bitfields (void)
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{
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if (ps.x != -8) {
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printf ("Got ps.x = %ld, expected -8.\n", (long)ps.x);
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failures++;
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}
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if (ps.y != -500) {
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printf ("Got ps.y = %ld, expected -500.\n", (long)ps.y);
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failures++;
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}
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ps.x = -3;
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ps.y = -512;
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if (ps.x != -3) {
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printf ("Got ps.x = %ld, expected -3.\n", (long)ps.x);
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failures++;
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}
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if (ps.y != -512) {
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printf ("Got ps.y = %ld, expected -512.\n", (long)ps.y);
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failures++;
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}
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}
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static struct signed_chars {
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signed char x : 4;
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} pc = {-8};
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static void test_signed_char_bitfields (void)
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{
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if (pc.x != -8) {
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printf ("Got pc.x = %ld, expected -8.\n", (long)pc.x);
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failures++;
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}
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pc.x = -3;
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if (pc.x != -3) {
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printf ("Got pc.x = %ld, expected -3.\n", (long)pc.x);
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failures++;
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}
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}
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static struct signed_longs {
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signed long x : 4;
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signed long y : 10;
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signed long z : 18;
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} pl = {-8, -500, -70000};
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static void test_signed_long_bitfields (void)
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{
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if (pl.x != -8) {
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if (pl.x < 0) {
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printf ("Got pl.x = %ld, expected -8.\n", (long)pl.x);
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} else {
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printf ("Got pl.x = %lu, expected -8.\n", (unsigned long)pl.x);
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}
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failures++;
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}
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if (pl.y != -500) {
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if (pl.y < 0) {
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printf ("Got pl.y = %ld, expected -500.\n", (long)pl.y);
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} else {
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printf ("Got pl.y = %lu, expected -500.\n", (unsigned long)pl.y);
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}
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failures++;
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}
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if (pl.z != -70000) {
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if (pl.z < 0) {
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printf ("Got pl.z = %ld, expected -70000.\n", (long)pl.z);
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} else {
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printf ("Got pl.z = %lu, expected -70000.\n", (unsigned long)pl.z);
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}
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failures++;
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}
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pl.x = -3;
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pl.y = -512;
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pl.z = -131072;
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if (pl.x != -3) {
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if (pl.x < 0) {
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printf ("Got pl.x = %ld, expected -3.\n", (long)pl.x);
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} else {
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printf ("Got pl.x = %lu, expected -3.\n", (unsigned long)pl.x);
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}
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failures++;
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}
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if (pl.y != -512) {
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if (pl.y < 0) {
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printf ("Got pl.y = %ld, expected -512.\n", (long)pl.y);
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} else {
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printf ("Got pl.y = %lu, expected -512.\n", (unsigned long)pl.y);
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}
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failures++;
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}
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if (pl.z != -131072) {
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if (pl.z < 0) {
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printf ("Got pl.z = %ld, expected -131072.\n", (long)pl.z);
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} else {
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printf ("Got pl.z = %lu, expected -131072.\n", (unsigned long)pl.z);
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}
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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_int_bitfields ();
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test_signed_short_bitfields ();
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test_signed_char_bitfields ();
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test_signed_long_bitfields ();
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printf ("failures: %u\n", failures);
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return failures;
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}
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