[Bug libstdc++/64467] New: [5 Regression] 28_regex/traits/char/isctype.cc and wchar_t/isctype.cc

[hp at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64467

            Bug ID: 64467
           Summary: [5 Regression] 28_regex/traits/char/isctype.cc and
                    wchar_t/isctype.cc
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hp at gcc dot gnu.org
              Host: x86_64-linux
            Target: cris-elf

These tests used to pass for cris-elf, but has feiled since a commit in the
range (217057:217069] (I'm behind on regression-bug-reporting):

Running
/tmp/hpautotest-gcc0/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp
...
[...]

FAIL: 28_regex/traits/char/isctype.cc execution test
FAIL: 28_regex/traits/wchar_t/isctype.cc execution test

In libstdc++.log (compile-line only quoted for completeness):

Executing on host: /tmp/hpautotest-gcc0/cris-elf/gccobj/./gcc/xg++
-shared-libgcc -B/tmp/hpautotest-gcc0/cris-elf/gccobj/./gcc -nostdinc++
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libstdc++-v3/src
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libstdc++-v3/src/.libs
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libstdc++-v3/libsupc++/.libs
-nostdinc -B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/newlib/ -isystem
/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/newlib/targ-include -isystem
/tmp/hpautotest-gcc0/gcc/newlib/libc/include
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libgloss/cris
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libgloss/libnosys
-L/tmp/hpautotest-gcc0/gcc/libgloss/cris
-B/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/bin/
-B/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/lib/ -isystem
/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/include -isystem
/tmp/hpautotest-gcc0/cris-elf/pre/cris-elf/sys-include
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./libgloss/cris/
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./libgloss/cris
-L/tmp/hpautotest-gcc0/gcc/libgloss/cris
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./libstdc++-v3/src/.libs
-D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections -g -O2
-DLOCALEDIR="." -nostdinc++
-I/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libstdc++-v3/include/cris-elf
-I/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/libstdc++-v3/include
-I/tmp/hpautotest-gcc0/gcc/libstdc++-v3/libsupc++
-I/tmp/hpautotest-gcc0/gcc/libstdc++-v3/include/backward
-I/tmp/hpautotest-gcc0/gcc/libstdc++-v3/testsuite/util
/tmp/hpautotest-gcc0/gcc/libstdc++-v3/testsuite/28_regex/traits/char/isctype.cc
  -std=gnu++11 ./libtestc++.a    -isystem
/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./newlib/targ-include -isystem
/tmp/hpautotest-gcc0/gcc/newlib/libc/include
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./libgloss/cris/
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./libgloss/cris
-L/tmp/hpautotest-gcc0/gcc/libgloss/cris 
-B/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./newlib/
-L/tmp/hpautotest-gcc0/cris-elf/gccobj/cris-elf/./newlib -sim3  -lm   -o
./isctype.exe    (timeout = 600)
PASS: 28_regex/traits/char/isctype.cc (test for excess errors)
assertion "!t.isctype('\n', t.lookup_classname(blank,
blank+sizeof(blank)/sizeof(blank[0])-1))" failed: file
"/tmp/hpautotest-gcc0/gcc/libstdc++-v3/testsuite/28_regex/traits/char/isctype.cc",
line 56, function: void test01()
program stopped with signal 6 (Aborted).
FAIL: 28_regex/traits/char/isctype.cc execution test

and also:

PASS: 28_regex/traits/wchar_t/isctype.cc (test for excess errors)
assertion "!t.isctype(L'\n', t.lookup_classname(blank,
blank+sizeof(blank)/sizeof(blank[0])-1))" failed: file
"/tmp/hpautotest-gcc0/gcc/libstdc++-v3/testsuite/28_regex/traits/wchar_t/isctype.cc",
line 53, function: void test01()
program stopped with signal 6 (Aborted).
FAIL: 28_regex/traits/wchar_t/isctype.cc execution test

(same fail message still at r219089).

Committer of libstdc++ changes in the indicated revision range CC:ed.

Unexpectedly, I don't see this for other non-linux and/or "newlib" targets with
libstdc++ results posted to gcc-testresults@.  There was also a commit to
gcc/ifcvt.c in this range, I'll triage the revision range to exclude that.