https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93903
Frédéric Recoules <frederic.recou...@univ-grenoble-alpes.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |frederic.recoules@univ-gren | |oble-alpes.fr --- Comment #1 from Frédéric Recoules <frederic.recou...@univ-grenoble-alpes.fr> --- I am pretty sure the error comes from the space you left in "r ". Yet, in the "Simple-Constraints" documentation, it is said that space are ignored to allow visual alignment but, in fact, I realized a while ago it generates an error. I think it would not be a big change to either update the documentation at https://gcc.gnu.org/onlinedocs/gcc/Simple-Constraints.html#Simple-Constraints or to make the parser ignore the blank.