zig/test/run_translated_c.zig
2020-01-10 16:34:40 -05:00

183 lines
5.3 KiB
Zig

const std = @import("std");
const tests = @import("tests.zig");
const nl = std.cstr.line_sep;
pub fn addCases(cases: *tests.RunTranslatedCContext) void {
cases.add("forward declarations",
\\#include <stdlib.h>
\\int foo(int);
\\int foo(int x) { return x + 1; }
\\int main(int argc, char **argv) {
\\ if (foo(2) != 3) abort();
\\ return 0;
\\}
, "");
cases.add("typedef and function pointer",
\\#include <stdlib.h>
\\typedef struct _Foo Foo;
\\typedef int Ret;
\\typedef int Param;
\\struct _Foo { Ret (*func)(Param p); };
\\static Ret add1(Param p) {
\\ return p + 1;
\\}
\\int main(int argc, char **argv) {
\\ Foo strct = { .func = add1 };
\\ if (strct.func(16) != 17) abort();
\\ return 0;
\\}
, "");
cases.add("ternary operator",
\\#include <stdlib.h>
\\static int cnt = 0;
\\int foo() { cnt++; return 42; }
\\int main(int argc, char **argv) {
\\ short q = 3;
\\ signed char z0 = q?:1;
\\ if (z0 != 3) abort();
\\ int z1 = 3?:1;
\\ if (z1 != 3) abort();
\\ int z2 = foo()?:-1;
\\ if (z2 != 42) abort();
\\ if (cnt != 1) abort();
\\ return 0;
\\}
, "");
cases.add("switch case",
\\#include <stdlib.h>
\\int lottery(unsigned int x) {
\\ switch (x) {
\\ case 3: return 0;
\\ case -1: return 3;
\\ case 8 ... 10: return x;
\\ default: return -1;
\\ }
\\}
\\int main(int argc, char **argv) {
\\ if (lottery(2) != -1) abort();
\\ if (lottery(3) != 0) abort();
\\ if (lottery(-1) != 3) abort();
\\ if (lottery(9) != 9) abort();
\\ return 0;
\\}
, "");
cases.add("boolean values and expressions",
\\#include <stdlib.h>
\\static const _Bool false_val = 0;
\\static const _Bool true_val = 1;
\\void foo(int x, int y) {
\\ _Bool r = x < y;
\\ if (!r) abort();
\\ _Bool self = foo;
\\ if (self == false_val) abort();
\\ if (((r) ? 'a' : 'b') != 'a') abort();
\\}
\\int main(int argc, char **argv) {
\\ foo(2, 5);
\\ if (false_val == true_val) abort();
\\ return 0;
\\}
, "");
cases.add("hello world",
\\#define _NO_CRT_STDIO_INLINE 1
\\#include <stdio.h>
\\int main(int argc, char **argv) {
\\ printf("hello, world!\n");
\\ return 0;
\\}
, "hello, world!" ++ nl);
cases.add("anon struct init",
\\#include <stdlib.h>
\\struct {int a; int b;} x = {1, 2};
\\int main(int argc, char **argv) {
\\ x.a += 2;
\\ x.b += 1;
\\ if (x.a != 3) abort();
\\ if (x.b != 3) abort();
\\ return 0;
\\}
, "");
cases.add("casting away const and volatile",
\\void foo(int *a) {}
\\void bar(const int *a) {
\\ foo((int *)a);
\\}
\\void baz(volatile int *a) {
\\ foo((int *)a);
\\}
\\int main(int argc, char **argv) {
\\ int a = 0;
\\ bar((const int *)&a);
\\ baz((volatile int *)&a);
\\ return 0;
\\}
, "");
cases.add("anonymous struct & unions",
\\#include <stdlib.h>
\\#include <stdint.h>
\\static struct { struct { uint16_t x, y; }; } x = { 1 };
\\static struct { union { uint32_t x; uint8_t y; }; } y = { 0x55AA55AA };
\\int main(int argc, char **argv) {
\\ if (x.x != 1) abort();
\\ if (x.y != 0) abort();
\\ if (y.x != 0x55AA55AA) abort();
\\ if (y.y != 0xAA) abort();
\\ return 0;
\\}
, "");
cases.add("array to pointer decay",
\\#include <stdlib.h>
\\int main(int argc, char **argv) {
\\ char data[3] = {'a','b','c'};
\\ if (2[data] != data[2]) abort();
\\ if ("abc"[1] != data[1]) abort();
\\ char *as_ptr = data;
\\ if (2[as_ptr] != as_ptr[2]) abort();
\\ if ("abc"[1] != as_ptr[1]) abort();
\\ return 0;
\\}
, "");
cases.add("struct initializer - packed",
\\#define _NO_CRT_STDIO_INLINE 1
\\#include <stdint.h>
\\#include <stdlib.h>
\\struct s {uint8_t x,y;
\\ uint32_t z;} __attribute__((packed)) s0 = {1, 2};
\\int main() {
\\ /* sizeof nor offsetof currently supported */
\\ if (((intptr_t)&s0.z - (intptr_t)&s0.x) != 2) abort();
\\ return 0;
\\}
, "");
cases.add("cast signed array index to unsigned",
\\#include <stdlib.h>
\\int main(int argc, char **argv) {
\\ int a[10], i = 0;
\\ a[i] = 0;
\\ if (a[i] != 0) abort();
\\ return 0;
\\}
, "");
cases.add("cast long long array index to unsigned",
\\#include <stdlib.h>
\\int main(int argc, char **argv) {
\\ long long a[10], i = 0;
\\ a[i] = 0;
\\ if (a[i] != 0) abort();
\\ return 0;
\\}
, "");
}