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cc65/test/val/cq85.c
2019-02-12 22:50:49 +01:00

316 lines
7.8 KiB
C

/*
!!DESCRIPTION!! C-Manual Chapter 8.5: Structure and Union declarations
!!ORIGIN!! LCC 4.1 Testsuite
!!LICENCE!! own, freely distributeable for non-profit. read CPYRIGHT.LCC
*/
#include "common.h"
struct defs {
int cbits; /* No. of bits per char */
int ibits; /* int */
int sbits; /* short */
int lbits; /* long */
int ubits; /* unsigned */
int fbits; /* float */
int dbits; /* double */
#ifndef NO_FLOATS
float fprec; /* Smallest number that can be */
float dprec; /* significantly added to 1. */
#endif
int flgs; /* Print return codes, by section */
int flgm; /* Announce machine dependencies */
int flgd; /* give explicit diagnostics */
int flgl; /* Report local return codes. */
int rrc; /* recent return code */
int crc; /* Cumulative return code */
char rfs[8]; /* Return from section */
};
int lbits; /* long */
int ubits; /* unsigned */
int fbits; /* float */
int dbits; /* double */
#ifndef NO_FLOATS
float fprec; /* Smallest number that can be */
float dprec; /* significantly added to 1. */
#endif
int flgs; /* Print return codes, by section */
int flgm; /* Announce machine dependencies */
int flgd; /* give explicit diagnostics */
int flgl; /* Report local return codes. */
int rrc; /* recent return code */
int crc; /* Cumulative return code */
char rfs[8]; /* Return from section */
#ifndef NO_OLD_FUNC_DECL
s85(pd0) /* 8.5 Structure and union declarations */
struct defs *pd0;
{
#else
int s85(struct defs *pd0){
#endif
static char s85er[] = "s85,er%d\n";
static char qs85[8] = "s85 ";
int rc;
char *ps, *pt;
struct tnode {
char tword[20];
int count;
struct tnode *left;
struct tnode *right;
};
struct tnode s1, s2, *sp;
struct{
char cdummy;
char c;
} sc;
struct{
char cdummy;
short s;
} ss;
struct{
char cdummy;
int i;
} si;
struct{
char cdummy;
long l;
} sl;
struct{
char cdummy;
unsigned u;
} su;
struct{
char cdummy;
#ifndef NO_FLOATS
float f;
#else
signed f;
#endif
} sf;
struct{
char cdummy;
#ifndef NO_FLOATS
double d;
#else
signed d;
#endif
} sd;
int diff[7], j;
static char *type[] = {
"char",
"short",
"int",
"long",
"unsigned",
#ifdef NO_FLOATS
"signed",
"signed",
#else
"float",
"double"
#endif
};
static char aln[] = " alignment: ";
#ifndef NO_BITFIELDS
struct{
int twobit:2;
int :1;
int threebit:3;
int onebit:1;
} s3;
#else
struct{
unsigned char twobit;
unsigned char threebit;
unsigned char onebit;
} s3;
#endif
union{
char u1[30];
short u2[30];
int u3[30];
long u4[30];
unsigned u5[30];
#ifndef NO_FLOATS
float u6[30];
double u7[30];
#else
signed u6[30];
signed u7[30];
#endif
} u0;
ps = qs85;
pt = pd0->rfs;
rc = 0;
while (*pt++ = *ps++);
/* Within a structure, the objects declared have
addresses which increase as their declarations are
read left to right.
*/
if( (char *)&s1.count - &s1.tword[0] <= 0
||(char *)&s1.left - (char *)&s1.count <= 0
||(char *)&s1.right - (char *)&s1.left <= 0){
if(pd0->flgd != 0) printf(s85er,1);
rc = rc+1;
}
/* Each non-field member of a structure begins on an
addressing boundary appropriate to its type.
*/
diff[0] = &sc.c - &sc.cdummy;
diff[1] = (char *)&ss.s - &ss.cdummy;
diff[2] = (char *)&si.i - &si.cdummy;
diff[3] = (char *)&sl.l - &sl.cdummy;
diff[4] = (char *)&su.u - &su.cdummy;
diff[5] = (char *)&sf.f - &sf.cdummy;
diff[6] = (char *)&sd.d - &sd.cdummy;
if(pd0->flgm != 0)
for(j=0; j<7; j++)
printf("%s%s%d\n",type[j],aln,diff[j]);
/* Field specifications are highly implementation de-
pendent. About the only thing we can do here is to
check is that the compiler accepts the field constructs,
and that they seem to work, after a fashion, at
run time...
*/
s3.threebit = 7;
s3.twobit = s3.threebit;
s3.threebit = s3.twobit;
if(s3.threebit != 3){
if(s3.threebit == -1){
if(pd0->flgm != 0) printf("Sign extension in fields\n");
}
else{
#ifdef NO_BITFIELDS
if(pd0->flgd != 0) printf("NO_BITFIELDS\n");
#else
if(pd0->flgd != 0) printf(s85er,2);
rc = rc+2;
#endif
}
}
s3.onebit = 1;
if(s3.onebit != 1){
if(pd0->flgm != 0)
printf("Be especially careful with 1-bit fields!\n");
}
/* A union may be thought of as a structure all of whose
members begin at offset 0 and whose size is sufficient
to contain any of its members.
*/
if( (char *)u0.u1 - (char *)&u0 != 0
||(char *)u0.u2 - (char *)&u0 != 0
||(char *)u0.u3 - (char *)&u0 != 0
||(char *)u0.u4 - (char *)&u0 != 0
||(char *)u0.u5 - (char *)&u0 != 0
||(char *)u0.u6 - (char *)&u0 != 0
||(char *)u0.u7 - (char *)&u0 != 0){
if(pd0->flgd != 0) printf(s85er,4);
rc = rc+4;
}
if( sizeof u0 < sizeof u0.u1
||sizeof u0 < sizeof u0.u2
||sizeof u0 < sizeof u0.u3
||sizeof u0 < sizeof u0.u4
||sizeof u0 < sizeof u0.u5
||sizeof u0 < sizeof u0.u6
||sizeof u0 < sizeof u0.u7){
if(pd0->flgd != 0) printf(s85er,8);
rc = rc+8;
}
/* Finally, we check that the pointers work. */
s1.right = &s2;
s2.tword[0] = 2;
s1.right->tword[0] += 1;
if(s2.tword[0] != 3){
if(pd0->flgd != 0) printf(s85er,16);
rc = rc+16;
}
return rc;
}
#ifdef NO_LOCAL_PROTOTYPES
int one();
#endif
/*********************************************************************************************
the main loop that launches the sections
*********************************************************************************************/
#ifndef NO_TYPELESS_STRUCT_PTR
int section(int j,struct* pd0){
#else
int section(int j,void* pd0){
#endif
switch(j){
case 0: return s85(pd0);
}
}
#define cq_sections 1
/*
C REFERENCE MANUAL (main)
*/
#ifndef NO_OLD_FUNC_DECL
main(n,args)
int n;
char **args;
{
#else
int main(int n,char **args) {
#endif
int j;
static struct defs d0, *pd0;
d0.flgs = 1; /* These flags dictate */
d0.flgm = 1; /* the verbosity of */
d0.flgd = 1; /* the program. */
d0.flgl = 1;
pd0 = &d0;
for (j=0; j<cq_sections; j++) {
d0.rrc=section(j,pd0);
d0.crc=d0.crc+d0.rrc;
if(d0.flgs != 0) printf("Section %s returned %d.\n",d0.rfs,d0.rrc);
}
if(d0.crc == 0) printf("\nNo errors detected.\n");
else printf("\nFailed.\n");
return d0.crc;
}