/* $NetBSD: msg_280.c,v 1.6 2022/06/22 19:23:18 rillig Exp $ */ # 3 "msg_280.c" // Test for message: comment /* %s */ must be outside function [280] /* VARARGS */ void varargs_ok(const char *str, ...) { (void)str; } /* * In the following example, the comment looks misplaced, but lint does not * warn about it. * * This is due to the implementation of the parser and the C grammar. When * the parser sees the token T_LPAREN, it has to decide whether the following * tokens will form a parameter type list or an identifier list. For that, * it needs to look at the next token to see whether it is a T_NAME (in which * case the T_LPAREN belongs to an id_list_lparen) or something else (in * which case the T_LPAREN belongs to an abstract_decl_lparen). This token * lookahead happens just before either of these grammar rules is reduced. * During that reduction, the current declaration context switches from * 'extern' to 'prototype argument', which makes this exact position the very * last possible. Everything later would already be in the wrong context. * * As of cgram.y 1.360 from 2021-09-04, the implementation of these grammar * rules is exactly the same, which makes it tempting to join them into a * single rule. */ void varargs_bad_param(/* VARARGS */ const char *str, ...) { (void)str; } void /* expect+1: warning: comment ** VARARGS ** must be outside function [280] */ varargs_bad_ellipsis(const char *str, /* VARARGS */ ...) { (void)str; } void varargs_bad_body(const char *str, ...) { /* expect+1: warning: comment ** VARARGS ** must be outside function [280] */ /* VARARGS */ (void)str; } void /* expect+1: warning: argument 'str' unused in function 'argsused_bad_body' [231] */ argsused_bad_body(const char *str) { /* expect+1: warning: comment ** ARGSUSED ** must be outside function [280] */ /* ARGSUSED */ } void printflike_bad_body(const char *fmt, ...) { /* expect+1: warning: comment ** PRINTFLIKE ** must be outside function [280] */ /* PRINTFLIKE */ (void)fmt; } void scanflike_bad_body(const char *fmt, ...) { /* expect+1: warning: comment ** SCANFLIKE ** must be outside function [280] */ /* SCANFLIKE */ (void)fmt; } |