On 07 Dec 2013, at 12:00, [email protected] wrote:
> From: Thiago Macieira <[email protected]>
> Subject: Re: [Development] [Request] Compiler warnings in Qt
> Date: 6 Dec 2013 18:16:20 GMT+1
> To: [email protected]
>
>
> On sexta-feira, 6 de dezembro de 2013 11:16:20, Kurt Pattyn wrote:
>> When compiling applications with compiler flags on, a lot of warnings are
>> generated for the Qt header files. I
>
> Which compiler? Which warnings?
Both with Clang on OSX and GCC on Linux and Windows (MinGW).
These are the flags that are used:
"-std=c++11"
"-Wall"
"-Wpedantic"
"-Wextra"
"-Weffc++" #turn on warnings from
Effective C++ handbook
"-fno-rtti" #disable runtime
type information
"-ffor-scope"
"-fuse-cxa-atexit"
"-fno-default-inline"
"-fvisibility=hidden" #do not export symbols by
default
"-fvisibility-inlines-hidden"
"-pedantic-errors"
"-Wsign-conversion"
"-Wsign-promo"
"-Wsign-compare"
"-Wnon-virtual-dtor"
"-Wold-style-cast"
"-Woverloaded-virtual"
"-Wzero-as-null-pointer-constant"
"-Wswitch"
"-Wswitch-default"
"-Wswitch-enum"
"-Wcast-qual"
"-Wcast-align"
"-Wuninitialized"
"-Wfloat-equal"
# "-Wshadow" #disable warning as too
many false negatives are created
"-Wuseless-cast"
"-Wlogical-op"
"-Wpacked"
"-Wredundant-decls"
"-Winline"
"-Wdisabled-optimization"
"-Wdeprecated"
"-Wempty-body"
"-Wreturn-type"
"-Wunused-variable"
"-Wformat"
"-Wformat-nonliteral"
"-Wunreachable-code"
For Clang these are comparable.
The kind of warnings are mostly signed/unsigned conversions (mainly caused by
QFlags). There is a non-virtual destructor warning on QSharedData (-Weffc++).
The moc generated files, generate errors like missing default clause in switch
statement.
Do you want a complete list?
>
> We're not supposed to have any warnings with GCC or Clang.
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