ORCA-C/Tests/Conformance/C17.8.0.21.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

53 lines
1.1 KiB
C++

/* Conformance Test 17.8.0.21: Verification of scanf, c format code */
#include <string.h>
#include <stdio.h>
int main (void)
{
FILE *f1;
int i;
char ch, string [50];
/* Redirect standard input from a file */
f1 = fopen ("3/tmp", "wb+"); /* open input file for test */
if (f1 == NULL)
goto Fail1;
fprintf(f1, "bten chars!andMore");
fclose(f1);
stdin = freopen ("3/tmp", "r", stdin);
if (stdin == NULL)
goto Fail1;
ch = 'a'; /* no assignment should be made */
i = scanf ("%*c");
if (i != 0)
goto Fail;
if (ch != 'a')
goto Fail;
i = scanf ("%10c", string); /* test assignment to string*/
if (i != 1)
goto Fail;
if (strncmp (string, "ten chars!", 10))
goto Fail;
stdin = freopen (".CONSOLE", "r", stdin); /* reset stdin and quit */
if (stdin == NULL)
goto Fail1;
printf ("Passed Conformance Test 17.8.0.21\n");
return 0;
Fail:
printf ("Failed Conformance Test 17.8.0.21\n");
return 0;
Fail1:
printf ("Unable to redirect stdin for Conformance Test 17.8.0.21\n");
return 0;
}