Description shanxifanshi 2023-02-24 14:49:55 UTC

[问题简述]
libfuse-test测试test_examples.pytest_passthrough_hp编译失败，编译报错日志如下：

编译报错日志：
[1/2] Compiling C++ object example/passthrough_hp.p/passthrough_hp.cc.o
FAILED: example/passthrough_hp.p/passthrough_hp.cc.o
clang++ -Iexample/passthrough_hp.p -Iexample -I../example -Iinclude -I../include -Ilib -I../lib -I. -I.. -fcolor-diagnostics -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -O2 -g -D_REENTRANT -DHAVE_CONFIG_H -D_GNU_SOURCE -Wall -Wextra -Wno-sign-compare -std=c++11 -Wmissing-declarations -Wwrite-strings -fno-strict-aliasing -pthread -MD -MQ example/passthrough_hp.p/passthrough_hp.cc.o -MF example/passthrough_hp.p/passthrough_hp.cc.o.d -o example/passthrough_hp.p/passthrough_hp.cc.o -c ../example/passthrough_hp.cc
In file included from ../example/passthrough_hp.cc:77:
../example/cxxopts.hpp:488:42: error: no member named 'numeric_limits' in namespace 'std'
            if (u > static_cast<U>(-std::numeric_limits<T>::min()))
                                    ~~~~~^
../example/cxxopts.hpp:488:57: error: 'T' does not refer to a value
            if (u > static_cast<U>(-std::numeric_limits<T>::min()))
                                                        ^
../example/cxxopts.hpp:479:26: note: declared here
      template <typename T>
                         ^
../example/cxxopts.hpp:488:61: error: no member named 'min' in the global namespace
            if (u > static_cast<U>(-std::numeric_limits<T>::min()))
                                                          ~~^
../example/cxxopts.hpp:495:41: error: no member named 'numeric_limits' in namespace 'std'
            if (u > static_cast<U>(std::numeric_limits<T>::max()))
                                   ~~~~~^
../example/cxxopts.hpp:495:56: error: 'T' does not refer to a value
            if (u > static_cast<U>(std::numeric_limits<T>::max()))
                                                       ^
../example/cxxopts.hpp:479:26: note: declared here
      template <typename T>
                         ^
../example/cxxopts.hpp:495:60: error: no member named 'max' in the global namespace
            if (u > static_cast<U>(std::numeric_limits<T>::max()))
                                                         ~~^
../example/cxxopts.hpp:515:29: error: no member named 'numeric_limits' in namespace 'std'
        SignedCheck<T, std::numeric_limits<T>::is_signed>()(negative, value, text);
                       ~~~~~^
../example/cxxopts.hpp:515:44: error: 'T' does not refer to a value
        SignedCheck<T, std::numeric_limits<T>::is_signed>()(negative, value, text);
                                           ^
../example/cxxopts.hpp:511:26: note: declared here
      template <typename T, typename U>
                         ^
../example/cxxopts.hpp:515:59: error: expected expression
        SignedCheck<T, std::numeric_limits<T>::is_signed>()(negative, value, text);
                                                          ^
../example/cxxopts.hpp:556:34: error: no member named 'numeric_limits' in namespace 'std'
      constexpr auto umax = std::numeric_limits<US>::max();
                            ~~~~~^
../example/cxxopts.hpp:556:49: error: unexpected type name 'US': expected expression
      constexpr auto umax = std::numeric_limits<US>::max();
                                                ^
../example/cxxopts.hpp:556:54: error: no member named 'max' in the global namespace
      constexpr auto umax = std::numeric_limits<US>::max();
                                                   ~~^
../example/cxxopts.hpp:557:39: error: no member named 'numeric_limits' in namespace 'std'
      constexpr bool is_signed = std::numeric_limits<T>::is_signed;
                                 ~~~~~^
../example/cxxopts.hpp:557:54: error: 'T' does not refer to a value
      constexpr bool is_signed = std::numeric_limits<T>::is_signed;
                                                     ^
../example/cxxopts.hpp:536:24: note: declared here
    template <typename T>
                       ^
../example/cxxopts.hpp:557:56: error: no member named 'is_signed' in the global namespace; did you mean simply 'is_signed'?
      constexpr bool is_signed = std::numeric_limits<T>::is_signed;
                                                       ^~~~~~~~~~~
                                                       is_signed
../example/cxxopts.hpp:557:22: note: 'is_signed' declared here
      constexpr bool is_signed = std::numeric_limits<T>::is_signed;
                     ^
../example/cxxopts.hpp:600:40: error: non-type template argument is not a constant expression
          std::integral_constant<bool, is_signed>());
                                       ^~~~~~~~~
../example/cxxopts.hpp:600:40: note: initializer of 'is_signed' is unknown
../example/cxxopts.hpp:557:22: note: declared here
      constexpr bool is_signed = std::numeric_limits<T>::is_signed;
                     ^
16 errors generated.
ninja: build stopped: subcommand failed.

[复验步骤]：
git clone https://github.com/libfuse/libfuse.git
cd libfuse
mkdir build
cd build
export PATH=/usr/local/bin/:$PATH
meson ..
ninja-build
ninja-build install
modprobe fuse
modprobe cuse
python3 -m pytest test/

[期望结果]
case pass

[实际结果]
用例编译失败


[测试环境]
# uname -r
5.10.134-583.git.ead5e8d2a.an8.x86_64

# cat /proc/cmdline
BOOT_IMAGE=(hd0,gpt2)/vmlinuz-5.10.134-583.git.ead5e8d2a.an8.x86_64 root=UUID=16fce93c-18ec-415d-aa04-13b074e4132b ro console=tty0 console=ttyS0,115200 cgroup.memory=nokmem crashkernel=0M-2G:0M,2G-8G:192M,8G-:256M

# python -V
Python 3.6.8

# yum list python3-pytest
Last metadata expiration check: 0:49:44 ago on Fri 24 Feb 2023 01:56:12 PM CST.
Installed Packages
python3-pytest.noarch                                                       3.4.2-11.el8                                                       @AppStream

# yum list meson
Last metadata expiration check: 1 day, 4:05:22 ago on Thu 23 Feb 2023 09:43:56 AM CST.
Installed Packages
meson.noarch                                                           0.58.2-2.an8                                                            @AppStream

# yum list ninja-build
Last metadata expiration check: 1 day, 4:05:41 ago on Thu 23 Feb 2023 09:43:56 AM CST.
Installed Packages
ninja-build.x86_64                                                       1.8.2-1.0.1.an8                                                       @AppStream

# yum list clang
Last metadata expiration check: 1 day, 4:05:52 ago on Thu 23 Feb 2023 09:43:56 AM CST.
Installed Packages
clang.x86_64                                            13.0.1-2.0.2.module+an8.7.0+10996+1588f068                                             @AppStream

[出现频率]
必现

[原因分析]：
该用例原来一直都是pass的，使用的clang包13.0.1-2.0.1，最近升级clang包到13.0.1-2.0.2之后出现了编译失败，疑似新的clang包跟用例不兼容导致。