From 5be04ec2ceb1df77afbca4fcbf9e92a712612d6f Mon Sep 17 00:00:00 2001 From: Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com> Date: Thu, 31 Oct 2024 16:27:12 +0100 Subject: Sync with the latest Gnulib code (d4ec02b3cc) --- gl/warn-on-use.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'gl/warn-on-use.h') diff --git a/gl/warn-on-use.h b/gl/warn-on-use.h index 30756034..701013a0 100644 --- a/gl/warn-on-use.h +++ b/gl/warn-on-use.h @@ -1,5 +1,5 @@ /* A C macro for emitting warnings if a function is used. - Copyright (C) 2010-2023 Free Software Foundation, Inc. + Copyright (C) 2010-2024 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published @@ -32,6 +32,10 @@ _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline' linkage. + _GL_WARN_ON_USE should not be used more than once for a given function + in a given compilation unit (because this may generate a warning even + if the function is never called). + However, one of the reasons that a function is a portability trap is if it has the wrong signature. Declaring FUNCTION with a different signature in C is a compilation error, so this macro must use the -- cgit v1.2.3-74-g34f1