ORCA-C/Tests/Conformance/C17.10.0.1.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

75 lines
1.6 KiB
C++

/* Conformance Test 17.10.0.1: Verification of fputs and puts */
#include <stdio.h>
#include <string.h>
int main (void)
{
FILE *f1;
int i,j;
char string [255], *strPtr;
f1 = fopen ("3/tmp", "w+"); /* open output file for test */
if (f1 == NULL)
goto Fail1;
/* Redirect standard output to a file */
stdout = freopen ("3/tmp2", "w+", stdout);
if (stdout == NULL)
goto Fail3;
/* Write strings to output files. */
j = fputs ("this is the first string\n", f1);
if (j)
goto Fail;
j = puts ("and this is the second string");
if (j)
goto Fail;
/* Check files' contents. */
rewind (f1);
rewind (stdout);
strPtr = fgets (string, 100, f1);
if (strPtr != string)
goto Fail;
if (strcmp (string, "this is the first string\n"))
goto Fail;
strPtr = fgets (string, 100, stdout);
if (strPtr != string)
goto Fail;
if (strcmp (string, "and this is the second string\n"))
goto Fail;
fclose(stdout); /* reset standard out */
i = fclose (f1); /* close the update file */
if (i == EOF)
goto Fail2;
printf ("Passed Conformance Test 17.10.0.1\n");
return 0;
Fail:
fprintf (stderr, "Failed Conformance Test 17.10.0.1\n");
return 0;
Fail1:
fprintf (stderr, "Unable to open input file for Conformance Test 17.10.0.1\n");
return 0;
Fail2:
fprintf (stderr, "Unable to close input file for Conformance Test 17.10.0.1\n");
return 0;
Fail3:
fprintf (stderr, "Unable to redirect stdout for Conformance Test 17.10.0.1\n");
return 0;
}