Hi Jim, > FYI, without this patch and with very recent gcc, I would see warnings > like this: > > lib/freading.c:29:1: error: function might be candidate for attribute 'pure'\ > [-Werror=suggest-attribute=pure]
The documentation [1] mentions as example of a non-pure function "feof in a multithreaded environment". freading is similar to feof. But our extended stdio functions have little chance of being useful in an environment where the same stream is accessed from different threads. Therefore OK for the change. But all of the functions freadable freadahead freading fwritable fwriting are similar enough that they should be treated the same way. Can you add the '__pure__' attribute also the other 4 functions as well? Bruno [1] http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html
