https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119117
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work|6.5.0 | Summary|[15 Regression] |[12/13/14/15 Regression] |Implementation of "if |instance variables |declarations" makes |sometimes causes unknown |instance variables unknown |type name |under certain conditions | Last reconfirmed| |2025-03-04 Ever confirmed|0 |1 Target Milestone|15.0 |12.5 Status|UNCONFIRMED |NEW Known to fail| |6.5.0 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed. I am suspecting this might be due to the parser rewrite in GCC 4.x.