ORCA-C/Tests/Deviance/D4.6.2.1.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

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/* Deviance Test 4.6.2.1: Ensure non-constant floating-point initializers */
/* for static and extern variables is detected */
int printf(const char *, ...);
static float f0 = 1.0;
static float f1 = f0 * 2.0;
static double d1 = f0 + f1;
static extended e1 = f0 / 4.6;
float f2 = (float) e1;
double d2 = f0--;
extended e2 = f0 - f1;
int main (void)
{
float f00 = 5.6 * f0;
static float f3 = f00;
static double d3 = 3.5 / f3;
static extended e3 = f00;
extern float f4 = 8.1; /* extern + initializers are not allowed */
extern double d4 = f0;
extern extended e4 = (extended) 5.0;
printf ("Failed Deviance Test 4.6.2.1\n");
}