我正在运行rpm spec文件,遇到以下错误:
$ rpmbuild -ba gregorio.spec
Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.dDWqRV
+ umask 022
+ cd /home/cantanima/rpmbuild/BUILD
+ cd /home/cantanima/rpmbuild/BUILD
+ rm -rf gregorio-2.4.1
+ /usr/bin/tar -xf -
+ /usr/bin/gzip -dc /home/cantanima/rpmbuild/SOURCES/gregorio-2.4.1.tar.gz
+ STATUS=0
+ '[' 0 -ne 0 ']'
+ cd gregorio-2.4.1
+ /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w .
+ $'\r'
/var/tmp/rpm-tmp.dDWqRV: line 39: $'\r': command not found
error: Bad exit status from /var/tmp/rpm-tmp.dDWqRV (%prep)
脚本文件/var/tmp/rpm-tmp.dDWqRV在该区域中包含以下行:
if [ $STATUS -ne 0 ]; then
exit $STATUS
fi
cd 'gregorio-2.4.1'
/usr/bin/chmod -Rf …After a recent update, Android Studio fails to build an unmodified project with errors along these lines:
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
> AAPT2 aapt2-4.1.1-6503028-linux Daemon #0: Unexpected error during compile '/path/to/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png', attempting to stop daemon.
This should not happen under normal circumstances, please file an issue if it does.
Notice that it's failing on an image supplied by Android Studio itself!
What can I do to fix it?
我一次又一次地试图在Android Studio项目中启用C/C++支持.我想我可能想使用C/C++,但我忘记了,至少在我的系统上,即使下载了NDK库,我也从来没有能够让它工作.
我一直在寻找如何从项目中删除C/C++支持,但似乎你能找到的唯一事情是关于如何启用/禁用NDK支持的问题(和答案),而不是如何从一个项目中删除支持项目.
那么,一个人怎么做呢？
我valgrind按以下方式运行一些代码：
valgrind --tool=memcheck --leak-check=full --track-origins=yes ./test
它返回以下错误：
==24860== Conditional jump or move depends on uninitialised value(s)
==24860== at 0x4081AF: GG::fl(M const&, M const&) const (po.cpp:71)
==24860== by 0x405CDB: MO::fle(M const&, M const&) const (m.cpp:708)
==24860== by 0x404310: M::operator>=(M const&) const (m.cpp:384)
==24860== by 0x404336: M::operator<(M const&) const (m.cpp:386)
==24860== by 0x4021FD: main (test.cpp:62)
==24860== Uninitialised value was created by a heap allocation
==24860== at 0x4C2EBAB: malloc (vg_replace_malloc.c:299)
==24860== by 0x40653F: GODA<unsigned int>::allocate_new_block() (goda.hpp:82)
==24860== by 0x406182: GODA<unsigned int>::GODA(unsigned …atomic_flag我尝试了在cplusplus.com上使用的基本示例。Valgrind 的 Helgrind 工具报告
164 errors from 28 contexts (suppressed: 0 from 0)
举例如下
==4868== Possible data race during read of size 1 at 0x605220 by thread #3
==4868== Locks held: none
==4868== at 0x401172: test_and_set (atomic_base.h:176)
==4868== by 0x401172: append_number(int) (helgrind_spinlock.cpp:12)
[output deleted]
==4868== This conflicts with a previous write of size 1 by thread #2
==4868== Locks held: none
==4868== at 0x4011C9: clear (atomic_base.h:193)
==4868== by 0x4011C9: append_number(int) (helgrind_spinlock.cpp:14)
[output deleted]
关于正确使用atomic_flag自旋锁的参考是否有误，或者 Helgrind …
我有一个 Ada 任务，Do_Something需要“调用”自身。我认为它来自 C++，我有一个线程正在运行void Do_Something()，有时void Do_Something()需要生成更多也运行的线程void Do_Something()。
艾达（我正在学习）不喜欢这样。这似乎是一个M（非）WE：
task body A_Task is
new_task: access A_Task;
my_level: Natural;
begin
accept Do_Something(level: in Natural) do
my_level := level + 1;
end Do_Something;
if my_level < 4 then
new_task := new A_Task;
new_task.Do_Something(my_level);
end if;
end A_Task;
GNAT 至少不喜欢这样，报告错误是new_task.Do_Something(my_level);因为
task type cannot be used as type mark within its own spec or body
然而，通过在任务之外添加这样的过程可以很容易地规避这一点：
procedure Circumvent(level: Natural) is
new_task: access A_Task;
begin
new_task …我的 Android 应用登录 Google Play 游戏服务似乎无声无息地失败：在登录活动中选择用户后，onActivityResult()收到的resultCode值为 10002。Android API 将这些消息存放在 logcat 中：
W/SignInActivity(16216): onSignInFailed()...
W/SignInActivity(16216): Sign in failed during 6
W/SignInActivity(16216): ==> Returning non-OK result: 10002
而我放置的 Log.w() 命令onActivityResult()存放这些消息：
W/Main activity(16167): In activity result with code 10002
W/Main activity(16167): activity result requests sign in
W/Main activity(16167): unsolved resolution
奇怪的是它曾经可以工作，当我尝试从Android Studio调试它时，每次登录都完美无缺，所以我什至无法调试应用程序！
我可以从哪里开始调试这个？