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Everywhere: Warn on function definitions without prototypes

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If no header includes the prototype of a function, then it cannot be
used from outside the translation unit it was defined in. In that case,
it should be marked as `static`, in order to avoid possible ODR
problems, unnecessary exported symbols, and allow the compiler to better
optimize those.

If this warning triggers in a function defined in a header, `inline`
needs to be added, otherwise if the header is included in more than one
TU, it will fail to link with a duplicate definition error.

The reason this diff got so big is that Lagom-only code wasn't built
with this flag even in Serenity times.
This commit is contained in:
Daniel Bertalan 2024-07-14 18:29:33 +02:00
parent 7fe82a1cda
commit c62240aa80
Notes: sideshowbarker 2024-07-18 08:27:14 +09:00
24 changed files with 146 additions and 97 deletions
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18
Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/main.cpp
View file

@ -8,6 +8,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "IDLGenerators.h"
#include "Namespaces.h"
#include <AK/Debug.h>
#include <AK/LexicalPath.h>
@ -16,21 +17,6 @@
#include <LibIDL/IDLParser.h>
#include <LibIDL/Types.h>
extern Vector<StringView> s_header_search_paths;
namespace IDL {
void generate_namespace_header(IDL::Interface const&, StringBuilder&);
void generate_namespace_implementation(IDL::Interface const&, StringBuilder&);
void generate_constructor_header(IDL::Interface const&, StringBuilder&);
void generate_constructor_implementation(IDL::Interface const&, StringBuilder&);
void generate_prototype_header(IDL::Interface const&, StringBuilder&);
void generate_prototype_implementation(IDL::Interface const&, StringBuilder&);
void generate_iterator_prototype_header(IDL::Interface const&, StringBuilder&);
void generate_iterator_prototype_implementation(IDL::Interface const&, StringBuilder&);
void generate_global_mixin_header(IDL::Interface const&, StringBuilder&);
void generate_global_mixin_implementation(IDL::Interface const&, StringBuilder&);
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
Core::ArgsParser args_parser;
@ -47,7 +33,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
.short_name = 'i',
.value_name = "path",
.accept_value = [&](StringView s) {
s_header_search_paths.append(s);
IDL::g_header_search_paths.append(s);
return true;
},
});