Regressions on native/master at commit r16-4092 vs commit r16-4087 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r16-4092 vs commit r16-4087 on Linux/x86_64
New failures:
FAIL: gfortran.dg/pr87908.f90   -O3 -g  (internal compiler error: Segmentation 
fault)
FAIL: gfortran.dg/pr87908.f90   -O3 -g  (internal compiler error: Segmentation 
fault)
FAIL: gfortran.dg/pr87908.f90   -O3 -g  (test for excess errors)

New passes:
FAIL: gfortran.dg/pr87908.f90   -O2  (test for excess errors)