On Sat, 28 Nov 2015, Richard Biener wrote: > Different approach: after the FE folds (unexpectedly?), scan the result > for SAVE_EXPRs and if found, drop the folding.
Or, if conversions are going to fold from language-independent code (which is the underlying problem here - a conversion without folding would be preferred once the fallout from that can be resolved), make the front end fold with c_fully_fold before doing the conversion, and wrap the result of the conversion in a C_MAYBE_CONST_EXPR with c_wrap_maybe_const in the same way as done in other places that fold early (if either c_fully_fold indicates it can't occur in a constant expression, or the result of folding / conversion is not an INTEGER_CST). -- Joseph S. Myers jos...@codesourcery.com
