AuroraMiddleware/qt5base-lts
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Remove Q_C_CALLBACKS

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This is useless. The C++ language does require callbacks passed to C
functions to also be extern "C". That's what this macro was doing.

But #ifdef'ing for the macro only made the code uglier. Just let the
extern "C" be there for all compilers.

PS: C++ classes can't be extern "C"...

Change-Id: Ic5d393bfd36e48a193fcffff13b9c9b3923443dd
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
This commit is contained in:
Thiago Macieira 2015-01-15 22:15:29 -08:00
parent 2f010390ad
commit 9d46189a64
4 changed files with 1 additions and 31 deletions
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3
src/corelib/global/qcompilerdetection.h
View File

@ -136,7 +136,6 @@
#elif defined(__GNUC__)
# define Q_CC_GNU (__GNUC__ * 100 + __GNUC_MINOR__)
# define Q_C_CALLBACKS
# if defined(__MINGW32__)
# define Q_CC_MINGW
# endif
@ -312,7 +311,6 @@
/* The Comeau compiler is based on EDG and does define __EDG__ */
# if defined(__COMO__)
# define Q_CC_COMEAU
# define Q_C_CALLBACKS
/* The `using' keyword was introduced to avoid KAI C++ warnings
but it's now causing KAI C++ errors instead. The standard is
@ -396,7 +394,6 @@
# if !defined(_BOOL)
# error "Compiler not supported"
# endif
# define Q_C_CALLBACKS
/* 4.2 compiler or older */
# else
# error "Compiler not supported"

6
src/corelib/thread/qthread_unix.cpp
View File

@ -241,15 +241,9 @@ void QAdoptedThread::init()
QThreadPrivate
*/
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
typedef void*(*QtThreadCallback)(void*);
#if defined(Q_C_CALLBACKS)
}
#endif
#endif // QT_NO_THREAD

12
src/gui/image/qjpeghandler.cpp
View File

@ -86,9 +86,7 @@ struct my_error_mgr : public jpeg_error_mgr {
jmp_buf setjmp_buffer;
};
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
static void my_error_exit (j_common_ptr cinfo)
{
@ -106,9 +104,7 @@ static void my_output_message(j_common_ptr cinfo)
qWarning("%s", buffer);
}
#if defined(Q_C_CALLBACKS)
}
#endif
static const int max_buf = 4096;
@ -123,9 +119,7 @@ public:
my_jpeg_source_mgr(QIODevice *device);
};
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
static void qt_init_source(j_decompress_ptr)
{
@ -185,9 +179,7 @@ static void qt_term_source(j_decompress_ptr cinfo)
src->device->seek(src->device->pos() - src->bytes_in_buffer);
}
#if defined(Q_C_CALLBACKS)
}
#endif
inline my_jpeg_source_mgr::my_jpeg_source_mgr(QIODevice *device)
{
@ -458,9 +450,7 @@ public:
};
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
static void qt_init_destination(j_compress_ptr)
{
@ -490,9 +480,7 @@ static void qt_term_destination(j_compress_ptr cinfo)
(*cinfo->err->error_exit)((j_common_ptr)cinfo);
}
#if defined(Q_C_CALLBACKS)
}
#endif
inline my_jpeg_destination_mgr::my_jpeg_destination_mgr(QIODevice *device)
{

11
src/gui/image/qpnghandler.cpp
View File

@ -157,10 +157,6 @@ public:
};
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
class QPNGImageWriter {
public:
explicit QPNGImageWriter(QIODevice*);
@ -190,6 +186,7 @@ private:
float gamma;
};
extern "C" {
static
void CALLBACK_CALL_TYPE iod_read_fn(png_structp png_ptr, png_bytep data, png_size_t length)
{
@ -234,9 +231,7 @@ void CALLBACK_CALL_TYPE qpiw_flush_fn(png_structp /* png_ptr */)
{
}
#if defined(Q_C_CALLBACKS)
}
#endif
static
void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, QSize scaledSize, bool *doScaledRead, float screen_gamma=0.0)
@ -492,17 +487,13 @@ static void read_image_scaled(QImage *outImage, png_structp png_ptr, png_infop i
}
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
static void CALLBACK_CALL_TYPE qt_png_warning(png_structp /*png_ptr*/, png_const_charp message)
{
qWarning("libpng warning: %s", message);
}
#if defined(Q_C_CALLBACKS)
}
#endif
void Q_INTERNAL_WIN_NO_THROW QPngHandlerPrivate::readPngTexts(png_info *info)