tests: Portability fixes, replaced 0/1/-1 return codes with macros

tests/stdio/all.c

@@ -9,5 +9,5 @@ int main(void) {
 	printf("%s\n", fgets(in, 30, f));
 	setvbuf(stdout, 0, _IONBF, 0);
 	printf("Hello\n");
-	return 0;
+	return EXIT_SUCCESS;
 }

tests/stdio/fgets.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
     //FILE *f = fopen("/etc/ssl/certs/ca-certificates.crt", "r");
@@ -12,7 +13,7 @@ int main(void) {
             puts("EOF");
             if (!feof(f)) {
                 puts("feof() not updated!");
-                return -1;
+                return EXIT_FAILURE;
             }
             break;
         }

tests/stdio/fputs.c

@@ -7,5 +7,5 @@ int main(void) {
 	char *in = "Hello World!";
 	fputs(in, f); // calls fwrite, helpers::fwritex, internal::to_write and internal::stdio_write
 	fclose(f);
-	return 0;
+	return EXIT_SUCCESS;
 }

tests/stdio/fread.c

@@ -1,5 +1,6 @@
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
     FILE *fp = fopen("stdio/fread.in", "rb");
@@ -8,7 +9,7 @@ int main(void) {
     for (int i = 1; i <= 32; ++i) {
         if (fread(buf, 1, i, fp) < 0) {
             perror("fread");
-            return 0;
+            return EXIT_FAILURE;
         }
         buf[i] = 0;
 
@@ -17,5 +18,5 @@ int main(void) {
 
     fclose(fp);
 
-    return 0;
+    return EXIT_SUCCESS;
 }

tests/stdio/freopen.c

@@ -1,9 +1,10 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
 	freopen("stdio/stdio.in", "r", stdin);
 	char in[6];
 	fgets(in, 6, stdin);
 	printf("%s\n", in); // should print Hello
-	return 0;
+	return EXIT_SUCCESS;
 }

tests/stdio/fseek.c

@@ -1,10 +1,11 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
 	FILE *f = fopen("stdio/stdio.in", "r");
     if (fseek(f, 14, SEEK_CUR) < 0) {
         puts("fseek error");
-        return 1;
+        return EXIT_FAILURE;
     }
     char buffer[256];
     printf("%s", fgets(buffer, 256, f));

tests/stdio/fwrite.c

@@ -7,18 +7,18 @@ int main(void) {
 	const char ptr[] = "Hello World!";
 
 	if (fwrite(ptr, 0, 17, f)) {
-		return -1;
+		return EXIT_FAILURE;
 	}
 
 	if (fwrite(ptr, 7, 0, f)) {
-		return -1;
+		return EXIT_FAILURE;
 	}
 
 	if (fwrite(ptr, 0, 0, f)) {
-		return -1;
+		return EXIT_FAILURE;
 	}
 
 	fwrite(ptr, sizeof(ptr), 1, f);
 	fclose(f);
-	return 0;
+	return EXIT_SUCCESS;
 }

tests/stdio/getc_unget.c

@@ -1,12 +1,13 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
 	ungetc('h', stdin);
 	char c;
 	if ((c = getchar()) == 'h') {
 		printf("Worked!\n");
-		return 0;
+		return EXIT_SUCCESS;
 	}
 	printf("failed :( %c\n", c);
-	return 0;
+	return EXIT_FAILURE;
 }

tests/stdio/mutex.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
     FILE* f = fopen("stdio/stdio.in", "r");
@@ -10,17 +11,17 @@ int main(void) {
 
     if (!ftrylockfile(f)) {
         puts("Mutex unlocked but it shouldn't be");
-        return -1;
+        return EXIT_FAILURE;
     }
     funlockfile(f);
 
     if (ftrylockfile(f)) {
         puts("Mutex locked but it shouldn't be");
-        return -1;
+        return EXIT_FAILURE;
     }
     if (!ftrylockfile(f)) {
         puts("Mutex unlocked but it shouldn't be");
-        return -1;
+        return EXIT_FAILURE;
     }
     funlockfile(f);
 }

tests/stdio/popen.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
     FILE *fp;
@@ -9,7 +10,7 @@ int main(void) {
     fp = popen("ls -1 example_dir", "r");
     if (fp == NULL) {
         perror("popen");
-        return -1;
+        return EXIT_FAILURE;
     }
 
     while (fgets(path, 256, fp) != NULL) {
@@ -20,10 +21,10 @@ int main(void) {
     status = pclose(fp);
     if (status == -1) {
         perror("pclose");
-        return -1;
+        return EXIT_FAILURE;
     } else {
         printf("status %x\n", status);
     }
 
-    return 0;
+    return EXIT_SUCCESS;
 }

tests/stdio/printf.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(void) {
     int sofar = 0;
@@ -48,5 +49,5 @@ int main(void) {
     printf("%G\n", 0.0001);
     printf("%G\n", 0.00001);
     printf("%E\n", 0.00001);
-    return 0;
+    return EXIT_SUCCESS;
 }

tests/stdio/rename.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <fcntl.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -20,8 +21,8 @@ int main(void) {
     close(fd);
     remove(newpath);
     if (strcmp(str, buf) == 0) {
-        return 0;
+        return EXIT_SUCCESS;
     } else {
-        return -1;
+        return EXIT_FAILURE;
     }
 }

tests/stdio/setvbuf.c

@@ -10,5 +10,5 @@ int main(void) {
 	char *in = malloc(30);
 	printf("%s\n", fgets(in, 30, f));
 	printf("Hello\n");
-	return 0;
+	return EXIT_SUCCESS;
 }

tests/stdio/sprintf.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 int main(void) {
@@ -11,7 +12,7 @@ int main(void) {
     );
     if (ret != 68) {
         printf("Failed! Return value was %d\n", ret);
-        return -1;
+        return EXIT_FAILURE;
     }
 
     memset(buffer, 0, sizeof(buffer));
@@ -24,7 +25,7 @@ int main(void) {
     );
     if (ret != 86) {
         printf("Failed! Return value was %d\n", ret);
-        return -1;
+        return EXIT_FAILURE;
     }
 
     puts(buffer);