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authorJörg Frings-Fürst <debian@jff-webhosting.net>2015-02-04 14:09:54 +0100
committerJörg Frings-Fürst <debian@jff-webhosting.net>2015-02-04 14:09:54 +0100
commitbd82d030011cd8b9655e5ded6b6df9343b42a6bd (patch)
treede82d886dfea0cb7dbb6e80436218a25cb211bc3 /src/tc-cast.c
Imported Upstream version 3.22upstream/3.22
Diffstat (limited to 'src/tc-cast.c')
-rw-r--r--src/tc-cast.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/src/tc-cast.c b/src/tc-cast.c
new file mode 100644
index 0000000..73b7d66
--- /dev/null
+++ b/src/tc-cast.c
@@ -0,0 +1,95 @@
+/*
+ * Testing for compile error in the cast helpers
+ * written by Jan Engelhardt
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the WTF Public License version 2 or
+ * (at your option) any later version.
+ */
+#include <math.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <libHX/defs.h>
+#include <libHX/init.h>
+#include "internal.h"
+#define UNUSED __attribute__((unused))
+
+static void c_signed(void)
+{
+ const char *si_00 = "foo";
+ char *si_01 = const_cast1(char *, si_00);
+ signed char *si_02 UNUSED = signed_cast(signed char *, si_01);
+ unsigned char *si_03 UNUSED = signed_cast(unsigned char *, si_01);
+ const signed char *si_04 UNUSED = signed_cast(const signed char *, si_00);
+ const unsigned char *si_05 UNUSED = signed_cast(const unsigned char *, si_00);
+ si_00 = signed_cast(const char *, si_05);
+}
+
+static void c_reinterpret(void)
+{
+ const char *si_00 = "foo";
+ void *sr_00 = reinterpret_cast(void *, static_cast(uintptr_t, 8));
+ int sr_01 = reinterpret_cast(uintptr_t, sr_00);
+ void *sr_02 = reinterpret_cast(void *, static_cast(uintptr_t, static_cast(unsigned int, reinterpret_cast(uintptr_t, &si_00))));
+ printf("sr: %p %u; %p[%p]\n", sr_00, sr_01, sr_02, &si_00);
+}
+
+static void c_static(void)
+{
+ double st_00 = sqrt(static_cast(int,
+ 10 * sqrt(static_cast(double, 3) / 4)));
+ printf("st: %f\n", st_00);
+}
+
+static void c_const1(void)
+{
+ const int *co_00 = NULL;
+ int *co_01 = const_cast1(int *, co_00);
+ co_00 = co_01;
+}
+
+static void c_const2(void)
+{
+ const int **co_02 = NULL;
+ int **co_03 UNUSED = const_cast2(int **, co_02);
+ int *const *co_04 = const_cast2(int *const *, co_02);
+ const int *const *co_05 = const_cast2(const int *const *, co_02);
+ co_02 = const_cast2(const int **, co_05);
+ co_04 = const_cast2(int *const *, co_05);
+}
+
+static void c_const3(void)
+{
+ const int *const *const *co_06 = NULL;
+ int ***co_07 UNUSED = const_cast3(int ***,
+ (printf("If this line is only printed once when the program "
+ "is run, __builtin_choose_expr works as desired.\n"), co_06));
+}
+
+static void c_constA(void)
+{
+ static const char r1[] = "static";
+ char *w1 UNUSED = const_cast1(char *, r1);
+
+ static const char *const r2[] = {"static"};
+ char **w2 UNUSED = const_cast2(char **, r2);
+
+ static const char *const *const r3[] = {NULL};
+ char ***w3 UNUSED = const_cast3(char ***, r3);
+}
+
+int main(void)
+{
+ if (HX_init() <= 0)
+ abort();
+ c_signed();
+ c_reinterpret();
+ c_static();
+ c_const1();
+ c_const2();
+ c_const3();
+ c_constA();
+ HX_exit();
+ return 0;
+}