Regressions on master at commit r15-2780 vs commit r15-2771 on Linux/x86_64 New failures: FAIL: gfortran.dg/sizeof_6.f90 -O1 execution test
New passes: FAIL: c-c++-common/musttail12.c -std=c++11 (test for excess errors) FAIL: c-c++-common/musttail12.c -std=c++17 (test for excess errors) FAIL: c-c++-common/musttail12.c -std=c++26 (test for excess errors)
