This allows the compiler to optimise the code a bit better: since they
don't return, it can assume in the code after the Q_ASSERT that the
condition was true.
MSVC is the exception: with MSVC, we have the CrtDbgReport dialog,
which allows the developer to continue execution, inside the
debugger. Therefore, we can't mark any of those functions as
non-returning because they can, after all, return.
Unfortunately, the Q_ASSERT usually expands to no code in release
mode, so the improvement in code generation happens in debug mode
only...
Change-Id: I4d542d6853cd51c71ffab1d563ed64ef7c419115
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
class QString;
Q_CORE_EXPORT QString qt_error_string(int errorCode = -1);
+
+#ifndef Q_CC_MSVC
+Q_NORETURN
+#endif
Q_CORE_EXPORT void qt_assert(const char *assertion, const char *file, int line);
#if !defined(Q_ASSERT)
#define QT_NO_PAINT_DEBUG
#endif
+#ifndef Q_CC_MSVC
+Q_NORETURN
+#endif
Q_CORE_EXPORT void qt_assert_x(const char *where, const char *what, const char *file, int line);
#if !defined(Q_ASSERT_X)
va_list ap;
va_start(ap, msg); // use variable arg list
qt_message(QtFatalMsg, context, msg, ap);
+#ifndef Q_CC_MSVC
+ Q_UNREACHABLE();
+#endif
va_end(ap);
}
__attribute__ ((format (printf, 2, 3)))
#endif
;
+
+#ifndef Q_CC_MSVC
+ Q_NORETURN
+#endif
void fatal(const char *msg, ...)
#if defined(Q_CC_GNU) && !defined(__INSURE__)
__attribute__ ((format (printf, 2, 3)))