Because you don't know the underlying type of, say, uint32_t, it's historically been difficult to printf them. Common approaches included just assuming %u would work (and wouldn't generate format-mismatch compiler warnings), or using %lu and casting to (unsigned long). Bleh.
C99's <inttypes.h> has macros that expand to string literals like "lu", that's supposed to be used for printf'ing <stdint.h> integers. But of course it's not portable across platforms. (No points for guessing which one doesn't have it.) mfbt has a new header, IntegerPrintfMacros.h, that addresses this need. It implements the <inttypes.h> interface, as far as these macros are concerned. So you should use it if you want to print <stdint.h> integers, now. Slightly more detail here if you want it: http://whereswalden.com/2013/09/04/mozillaintegerprintfmacros-h-now-provides-prid32-and-friends-macros-for-printfing-uint32_t-and-so-on/ Jeff _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
