ORCA-C/Tests/Conformance/C4.5.4.2.CC
Stephen Heumann 91d33b586d Fix various C99+ conformance issues and bugs in test cases.
The main changes made to most tests are:

*Declarations always include explicit types, not relying on implicit int. The declaration of main in most test programs is changed to be "int main (void) {...}", adding an explicit return type and a prototype. (There are still some non-prototyped functions, though.)

*Functions are always declared before use, either by including a header or by providing a declaration for the specific function. The latter approach is usually used for printf, to avoid requiring ORCA/C to process stdio.h when compiling every test case (which might make test runs noticeably slower).

*Make all return statements in non-void functions (e.g. main) return a value.

*Avoid some instances of undefined behavior and type errors in printf and scanf calls.

Several miscellaneous bugs are also fixed.

There are still a couple test cases that intentionally rely on the C89 behavior, to ensure it still works.
2022-10-17 20:17:24 -05:00

106 lines
2.1 KiB
C++

/* Conformance Test 4.5.4.2: Verification of function declarators, using */
/* non-prototyped form */
#include <stdio.h>
#include <stddef.h>
/***************************************************************************/
static int I1 (func1, func2)
int (*func1) ();
int (*func2) ();
{
return ( ((*func1) ('a')) + ((*func2) (3.5)) );
}
/***************************************************************************/
static int I2 (func)
int (*func []) ();
{
int j;
j = (*func) ('@');
j += (func[1]) ('@');
return j;
}
/***************************************************************************/
int main ()
{
int i;
int Char1 (), Char2 (); /* define external functions */
int Float1 (), Float2();
int (*f1Ptr) (); /* pointer to function returning int */
int (*f2Ptr) ();
int (*f1Array [3]) (); /* array of pointers to functions */
/* returning int */
f1Ptr = Char1;
f2Ptr = Float2;
i = I1 (f1Ptr, f2Ptr);
if (i != 0xC3)
goto Fail;
f1Ptr = Char2;
f2Ptr = Float1;
i = I1 (f1Ptr, f2Ptr);
if (i != 0xD4)
goto Fail;
i = I1 (Char1, Float1);
if (i != 0xD3)
goto Fail;
f1Array [0] = Char1;
f1Array [1] = Char2;
f1Array [2] = NULL;
i = I2 (f1Array);
if (i != 0x143)
goto Fail;
printf ("Passed Conformance Test 4.5.4.2\n");
return 0;
Fail:
printf ("Failed Conformance Test 4.5.4.2\n");
}
/***************************************************************************/
int Char1 (ch)
char ch;
{
return (ch + 'a');
}
/***************************************************************************/
int Char2 (ch)
char ch;
{
return ((ch) + ('b'));
}
/***************************************************************************/
int Float1 (f)
float f;
{
return (int) ((f) * 5.0);
}
/***************************************************************************/
int Float2 (f)
float f;
{
return (int) (f / 2.0);
}