ORCA-C/Tests/Spec.Conform/SPC21.3.0.1.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

59 lines
1.5 KiB
C++

/* */
/* Special Conformance Test 21.3.0.1: Verification of exit, atexit functions */
/* */
/* The tester should verify that the sequence of messages "return from */
/* function 1", "return from function 2", "return from function 3" are */
/* displayed on the screen, and that the {status} shell variable is set to */
/* 3 upon completion of the program. */
/* */
#include <stdlib.h>
int printf(const char *, ...);
/******************************************************************************/
void F1 ()
{
printf ("Return from function 1\n");
}
/******************************************************************************/
void F2 ()
{
printf ("Return from function 2\n");
}
/******************************************************************************/
void F3 ()
{
printf ("Return from function 3\n");
}
/******************************************************************************/
int main (void)
{
int i;
i = atexit (F3);
if (i != 0)
goto Fail;
i = atexit (F2);
if (i != 0)
goto Fail;
i = atexit (F1);
if (i != 0)
goto Fail;
exit (3);
Fail:
printf ("Failure of atexit function in Special Conformance Test 21.3.0.1\n");
}