ORCA-C/Tests/Spec.Conform/SPC17.3.0.1.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

70 lines
2.0 KiB
C++

/* Special Conformance Test 17.3.0.1: Verification of buffering facility */
/* setvbuf. */
/* */
/* Tester needs to verify that the file 3/tmp is created and contains the */
/* following characters: ASCII $20 through $6E, plus ~ and } */
#include <stdio.h>
int main (void)
{
FILE *f1; /* file pointer */
char buf [80]; /* buffer */
int i, j;
f1 = fopen ("3/tmp", "w"); /* create file to work on */
if (f1 == NULL)
goto Fail1;
i = setvbuf (f1, buf, _IOFBF, 80); /* allocate write buffer for file */
if (i)
goto Fail2;
for (i = 0; i < 79; i++) /* write 79 charaters to the file */
{
j = fputc ( (char) (i + 0x20), f1);
if (j == EOF)
goto Fail3;
}
for (j = 0x20, i = 0; i < 79; i++) /* check buffer contents */
if (buf [i] != j++)
goto Fail;
j = fputc ('~', f1); /* 2 more chars should cause*/
if (j == EOF) /* buffer to be flushed */
goto Fail3;
j = fputc ('}', f1);
if (j == EOF)
goto Fail3;
if (buf [0] != '}')
goto Fail;
i = fclose (f1); /* close the file and quit */
if (i == EOF)
goto Fail4;
printf ("Passed Special Conformance Test 17.3.0.1\n");
return 0;
Fail:
printf ("Failed Special Conformance Test 17.3.0.1\n");
return 0;
Fail1:
printf ("Could not open tmp file for Special Conformance Test 17.3.0.1\n");
return 0;
Fail2:
printf ("Could not allocate buffer for Special Conformance Test 17.3.0.1\n");
return 0;
Fail3:
printf ("Could not write to file for Special Conformance Test 17.3.0.1\n");
return 0;
Fail4:
printf ("Could not close file for Special Conformance Test 17.3.0.1\n");
return 0;
}