diff options
| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
|---|---|---|
| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/cpp/Newlines-in-Arguments.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
Diffstat (limited to 'share/doc/cpp/Newlines-in-Arguments.html')
| -rw-r--r-- | share/doc/cpp/Newlines-in-Arguments.html | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/share/doc/cpp/Newlines-in-Arguments.html b/share/doc/cpp/Newlines-in-Arguments.html new file mode 100644 index 0000000..7b9cce7 --- /dev/null +++ b/share/doc/cpp/Newlines-in-Arguments.html @@ -0,0 +1,108 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1987-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation. A copy of +the license is included in the +section entitled "GNU Free Documentation License". + +This manual contains no Invariant Sections. The Front-Cover Texts are +(a) (see below), and the Back-Cover Texts are (b) (see below). + +(a) The FSF's Front-Cover Text is: + +A GNU Manual + +(b) The FSF's Back-Cover Text is: + +You have freedom to copy and modify this GNU Manual, like GNU + software. Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>The C Preprocessor: Newlines in Arguments</title> + +<meta name="description" content="The C Preprocessor: Newlines in Arguments"> +<meta name="keywords" content="The C Preprocessor: Newlines in Arguments"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Index-of-Directives.html#Index-of-Directives" rel="index" title="Index of Directives"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Macro-Pitfalls.html#Macro-Pitfalls" rel="up" title="Macro Pitfalls"> +<link href="Conditionals.html#Conditionals" rel="next" title="Conditionals"> +<link href="Argument-Prescan.html#Argument-Prescan" rel="previous" title="Argument Prescan"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Newlines-in-Arguments"></a> +<div class="header"> +<p> +Previous: <a href="Argument-Prescan.html#Argument-Prescan" accesskey="p" rel="previous">Argument Prescan</a>, Up: <a href="Macro-Pitfalls.html#Macro-Pitfalls" accesskey="u" rel="up">Macro Pitfalls</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index-of-Directives.html#Index-of-Directives" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="Newlines-in-Arguments-1"></a> +<h4 class="subsection">3.10.7 Newlines in Arguments</h4> +<a name="index-newlines-in-macro-arguments"></a> + +<p>The invocation of a function-like macro can extend over many logical +lines. However, in the present implementation, the entire expansion +comes out on one line. Thus line numbers emitted by the compiler or +debugger refer to the line the invocation started on, which might be +different to the line containing the argument causing the problem. +</p> +<p>Here is an example illustrating this: +</p> +<div class="smallexample"> +<pre class="smallexample">#define ignore_second_arg(a,b,c) a; c + +ignore_second_arg (foo (), + ignored (), + syntax error); +</pre></div> + +<p>The syntax error triggered by the tokens <code>syntax error</code> results in +an error message citing line three—the line of ignore_second_arg— +even though the problematic code comes from line five. +</p> +<p>We consider this a bug, and intend to fix it in the near future. +</p> + + + +</body> +</html> |