[Issue 4458] Static typing for format strings, when possible

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4458



--- Comment #2 from bearophile_hugs at eml.cc 2011-02-28 04:40:16 PST ---
Among the SAL (Microsoft's standard source code annotation language) there is
__format_string too, it denotes strings that contains % markers in the style of
printf:
http://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx

In D it may be useful to catch bugs like this:

@format_string string f = "%d";
writeln(f, 10);

n most cases you don't want to print a format string. The compiler may show a
warning, saying that you are using a format string as first argument of a
printing function that doesn't use a format string. This warning helps against
that bug.

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