strcmp(1): further error-proofing
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							| @ -26,18 +26,22 @@ | ||||
| char *program_name = "strcmp"; | ||||
| 
 | ||||
| int main(int argc, char *argv[]) { | ||||
| 	program_name = argv[0] == NULL ? program_name : argv[0]; | ||||
| 	int i; | ||||
| 	unsigned int i; | ||||
| 
 | ||||
| #ifdef __OpenBSD__ | ||||
| 	if (pledge("stdio", NULL) == -1) { | ||||
| 		perror(program_name); | ||||
| 		perror(argv[0] == NULL ? program_name : argv[0]); | ||||
| 
 | ||||
| 		return EX_OSERR; | ||||
| 	} | ||||
| #endif | ||||
| 
 | ||||
| 	if (argc < 3) { | ||||
| 		(void)fprintf(stderr, "Usage: %s string string...\n", program_name); | ||||
| 		(void)fprintf( | ||||
| 			stderr, | ||||
| 			"Usage: %s string string...\n", | ||||
| 			argv[0] == NULL ? program_name : argv[0] | ||||
| 		); | ||||
| 
 | ||||
| 		return EX_USAGE; | ||||
| 	} | ||||
|  | ||||
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