https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64638
Bug ID: 64638
Summary: Build failure with recent futex changes in libstdc++,
likely all non-futex targets
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: build
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: hp at gcc dot gnu.org
CC: torvald at gcc dot gnu.org
Host: x86_64-linux-gnu
Target: cris-elf
With a commit in the range (219755:219780], build has started to fail for
cris-elf as follows:
...
/tmp/hpautotest-gcc1/cris-elf/gccobj/./gcc/xgcc -shared-libgcc
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/./gcc -nostdinc++
-L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/src
-L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/src/.libs
-L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/libsupc++/.libs
-nostdinc -B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/newlib/ -isystem
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/newlib/targ-include -isystem
/tmp/hpautotest-gcc1/gcc/newlib/libc/include
-B/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libgloss/cris
-L/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libgloss/libnosys
-L/tmp/hpautotest-gcc1/gcc/libgloss/cris
-B/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/bin/
-B/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/lib/ -isystem
/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/include -isystem
/tmp/hpautotest-gcc1/cris-elf/pre/cris-elf/sys-include -x c++-header
-nostdinc++ -g -O2
-I/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/cris-elf
-I/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include
-I/tmp/hpautotest-gcc1/gcc/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x
/tmp/hpautotest-gcc1/gcc/libstdc++-v3/include/precompiled/stdc++.h \
-o cris-elf/bits/stdc++.h.gch/O2ggnu++0x.gch
In file included from
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/future:44:0,
from
/tmp/hpautotest-gcc1/gcc/libstdc++-v3/include/precompiled/stdc++.h:103:
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_futex.h:223:5:
error: 'mutex' does not name a type
mutex _M_mutex;
^
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_futex.h:224:5:
error: 'condition_variable' does not name a type
condition_variable _M_condvar;
^
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_futex.h:
In member function 'unsigned int
std::__atomic_futex_unsigned<_Waiter_bit>::_M_load(std::memory_order)':
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_futex.h:232:19:
error: 'mutex' was not declared in this scope
unique_lock<mutex> __lock(_M_mutex);
^
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_futex.h:232:24:
error: template argument 1 is invalid
unique_lock<mutex> __lock(_M_mutex);
^
/tmp/hpautotest-gcc1/cris-elf/gccobj/cris-elf/libstdc++-v3/include/bits/atomic_futex.h:232:33:
error: '_M_mutex' was not declared in this scope
unique_lock<mutex> __lock(_M_mutex);
^
This is a "bare-metal" "newlib" target.
