When using sprintf, the compiler warns me that the function is deprecated.
How can I show my own compiler warning?
+6
A:
In Visual Studio,
#pragma message ("Warning goes here")
On a side note, if you want to suppress such warnings, find the compiler warning ID (for the deprecated warning, it's C4996) and insert this line:
#pragma warning( disable : 4996)
Jacob
2010-01-26 23:00:46
This doesn't do exactly what Martin wants, though -- he wants the warning to be issued when the function is _used_, not when it is compiled.
Martin B
2010-01-26 23:06:15
I guess my question could have be read either way (sorry for that!), but this one was what I was looking for.
Martin
2010-01-26 23:16:01
+6
A:
To mark a function as deprecated, use __declspec(deprecated), e.g.
__declspec(deprecated) void f();
Martin B
2010-01-26 23:05:07
He asks for showing his own warning, not a specific *deprecated* warning.
Georg Fritzsche
2010-01-26 23:10:09
+2
A:
Although there is no standard #warning directice, many compilers (including GCC, VC, Intels and Apples), support #warning message.
#warning "this is deprecated"
Often it is better to not only bring up a warning (which people can overlook), but to let compiling fail completely, using the #error directive (which is standard):
#if !defined(FOO) && !defined(BAR)
# error "you have neither foo nor bar set up"
#endif
Georg Fritzsche
2010-01-26 23:07:30