mirror of
https://github.com/cc65/cc65.git
synced 2024-11-03 10:07:02 +00:00
112 lines
2.0 KiB
C
112 lines
2.0 KiB
C
/*
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!!DESCRIPTION!! pointer test
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!!ORIGIN!!
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!!LICENCE!! public domain
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*/
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#include <stdio.h>
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/*
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check behaviour on incompletely declared arrays
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*/
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char i1[];
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void test1(void) {
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int a;
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a=sizeof(i1[0]);
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printf("%04x - ",a);
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if(sizeof(i1[0])==sizeof(char)) {
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/* gcc gives size of element */
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printf("sizeof(i1[0]) gives size of element\n");
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}
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if(sizeof(i1[0])==sizeof(char*)) {
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printf("sizeof(i1[0]) gives size of pointer to element\n");
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}
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}
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/*
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check behaviour on string init
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*/
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char t1[]="abcde";
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char t2[]={"abcde"};
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char *t3="abcde";
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char *t4={"abcde"};
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void test2(void) {
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char c1,c2,c3,c4;
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int i,e=0;
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for(i=0;i<5;i++){
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c1=t1[i];c2=t2[i];c3=t3[i];c4=t4[i];
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/* printf("%02x %02x %02x %02x\n",c1,c2,c3,c4); */
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printf("%c %c %c %c\n",c1,c2,c3,c4);
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if(!((c1==c2)&(c1==c3)&(c1==c4))) e=1;
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}
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if(e) printf("test2 failed.\n");
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else printf("test2 ok.\n");
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}
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/*
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check behaviour on extern-declarations inside functions
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*/
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typedef struct {
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char *name;
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void *func;
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} A3;
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#ifdef NO_SLOPPY_STRUCT_INIT
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A3 a3[] = {
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{ "test3", (void*) NULL },
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{ "test3", (void*) NULL },
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};
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#else
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/*gcc warning: missing braces around initializer (near initialization for `a3[0]')
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this type of struct-initialization seems to be kinda common */
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A3 a3[] = {
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"test3", (void*) NULL ,
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"test3", (void*) NULL ,
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};
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#endif
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void test3a(A3 *list, int number){
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printf("%s %d\n",list->name,number);
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}
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static void test31(void)
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{
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extern A3 a3[];
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test3a(a3, -1);
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}
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#if 0
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/* this variation compiles and works with cc65, but gives an error with gcc :=P */
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static void test32(void)
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{
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extern A3 *a3;
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test3a(a3, -1);
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}
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#endif
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static void test30(void)
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{
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test3a(a3, -1);
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}
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/*
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todo: add test on function pointers in the form of (*func)(arg) ...
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cc65 seems to have problems here aswell ;/
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*/
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int main(void) {
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test1();
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test2();
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test30();
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test31();
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/* test32(); */
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return 0;
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}
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