On Linux/x86_64,

325aa13996bafce0c4927876c315d1fa706d9881 is the first bad commit
commit 325aa13996bafce0c4927876c315d1fa706d9881
Author: Thomas Schwinge <tho...@codesourcery.com>
Date:   Fri May 21 08:51:47 2021 +0200

    [OpenACC privatization] Reject 'static', 'external' in blocks [PR90115]

caused

FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O0   (test for warnings, line 134)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O0   (test for warnings, line 98)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O1   (test for warnings, line 134)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O1   (test for warnings, line 98)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O2   (test for warnings, line 134)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O2   (test for warnings, line 98)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O3 -fomit-frame-pointer -funroll-loops 
-fpeel-loops -ftracer -finline-functions   (test for warnings, line 134)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O3 -fomit-frame-pointer -funroll-loops 
-fpeel-loops -ftracer -finline-functions   (test for warnings, line 98)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O3 -g   (test for warnings, line 134)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -O3 -g   (test for warnings, line 98)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -Os   (test for warnings, line 134)
FAIL: libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_host=1 
-DACC_MEM_SHARED=1 -foffload=disable  -Os   (test for warnings, line 98)

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-989/usr 
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld 
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl 
--enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check 
RUNTESTFLAGS="fortran.exp=libgomp.oacc-fortran/privatized-ref-2.f90 
--target_board='unix{-m32}'"
$ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check 
RUNTESTFLAGS="fortran.exp=libgomp.oacc-fortran/privatized-ref-2.f90 
--target_board='unix{-m32\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
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