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[doc, committed] fix -Wbad-function-cast example
- From: Sandra Loosemore <sandra at codesourcery dot com>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Mon, 12 Jan 2015 14:40:42 -0700
- Subject: [doc, committed] fix -Wbad-function-cast example
- Authentication-results: sourceware.org; auth=none
I was confused by the description of -Wbad-function-cast. It talks
about function calls, but the malloc example looked more like a
declaration, and IIRC it's not valid to redeclare functions from the
standard C library with the wrong return type (or at the very least we
shouldn't encourage doing so in an example). After checking the
implementation to see what the option actually does, I decided it would
be better not to name any particular function here.
Checked in under the obvious fix rule.
-Sandra
2015-01-12 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* doc/invoke.texi ([-Wbad-function-cast]): Rewrite to avoid confusing
example.
Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi (revision 219488)
+++ gcc/doc/invoke.texi (working copy)
@@ -4625,8 +4625,9 @@ example, warn if an unsigned variable is
@item -Wbad-function-cast @r{(C and Objective-C only)}
@opindex Wbad-function-cast
@opindex Wno-bad-function-cast
-Warn whenever a function call is cast to a non-matching type.
-For example, warn if @code{int malloc()} is cast to @code{anything *}.
+Warn when a function call is cast to a non-matching type.
+For example, warn if a call to a function returning an integer type
+is cast to a pointer type.
@item -Wc90-c99-compat @r{(C and Objective-C only)}
@opindex Wc90-c99-compat