Regressions on master at commit r15-7591 vs commit r15-7589 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-7591 vs commit r15-7589 on Linux/x86_64
New failures:

New passes:
FAIL: g++.dg/asan/pr118763.C   -O0  execution test
FAIL: g++.dg/asan/pr118763.C   -O0  execution test
FAIL: g++.dg/asan/pr118763.C   -O1  execution test
FAIL: g++.dg/asan/pr118763.C   -O1  execution test
FAIL: g++.dg/asan/pr118763.C   -Os  execution test
FAIL: g++.dg/asan/pr118763.C   -Os  execution test