On Tue, Apr 30, 2024, at 2:43 PM, Paul Eggert wrote: > On 2024-04-30 11:24, Alan Coopersmith wrote: >> the biggest source of problems was not function prototypes, >> but the change of "true" and "false" to no longer be acceptable lvalues, >> and of "bool" to be a builtin type. > > Thanks for mentioning that, as I hadn't run into that problem. I > installed the attached. Because of this class of problems, I think we ought to prioritize giving package authors a way to control which edition of the C standard AC_PROG_CC will select, rather than just always using the most recent one we know about. zw