error.h

一个编译器修改的例子

#ifndef ERROR_H
#define ERROR_H

#include "bool.h"
#include "token.h"

/* Use the error function to print error messages in the proper
 * 'inputfilename, lineno: errmsg' format. Formatting is the same as printf.
 * 'error' sets the error_seen variable to true, preventing main() from
 * starting the code generation phase. When NULL is passed as the token
 * pointer, the value of current_line (defined in lex.h) and input_file_name
 * (defined in io.h) are used instead of the line_number and file_name in the
 * token.
 */
extern void error(const Token *, const char *format, ...);
extern Bool error_seen;

/* Use the warning function to print out warning messages. It is similar to
 * the error function, except that it does not set the error_seen variable.
 */
extern void warning(const Token *, const char *format, ...);

#endif