Replace most gcc format attributes by macro GCC_FMT_ATTR (format checking)

Since version 4.4.x, gcc supports additional format attributes.
    __attribute__ ((format (gnu_printf, 1, 2)))
should be used instead of
    __attribute__ ((format (printf, 1, 2))
because QEMU always uses standard format strings (even with mingw32).

The patch replaces format attribute printf / __printf__ by macro
GCC_FMT_ATTR which uses gnu_printf if supported.

It also removes an #ifdef __GNUC__ (not needed any longer).

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/qerror.h b/qerror.h
index 62802ea..f2984dd 100644
--- a/qerror.h
+++ b/qerror.h
@@ -38,8 +38,7 @@ QError *qerror_from_info(const char *file, int linenr, const char *func,
 QString *qerror_human(const QError *qerror);
 void qerror_print(QError *qerror);
 void qerror_report_internal(const char *file, int linenr, const char *func,
-                            const char *fmt, ...)
-    __attribute__ ((format(printf, 4, 5)));
+                            const char *fmt, ...) GCC_FMT_ATTR(4, 5);
 #define qerror_report(fmt, ...) \
     qerror_report_internal(__FILE__, __LINE__, __func__, fmt, ## __VA_ARGS__)
 QError *qobject_to_qerror(const QObject *obj);