On Tue, 31 Jul 2018, David Malcolm wrote: > I didn't exhaustively check every callsite to the changed calls; I'm > assuming that -Wformat during bootstrap has effectively checked that > for me. Though now I think about it, I note that we use > HOST_WIDE_INT_PRINT_DEC in many places: is this guaranteed to be a > valid input to pp_format on all of our configurations?
HOST_WIDE_INT_PRINT_DEC should not be considered safe with pp_format (although since r197049 may have effectively stopped using %I64 on MinGW hosts, I'm not sure if there are current cases where it won't work). Rather, it is the job of pp_format to map the 'w' length specifier to HOST_WIDE_INT_PRINT_DEC etc. I think it clearly makes for cleaner code to limit use of HOST_WIDE_INT_PRINT_* to as few places as possible and to prefer use of internal printf-like functions that accept formats such as %wd where possible. -- Joseph S. Myers jos...@codesourcery.com
