blocks|key|521082|text|在Snow+Leopard和以后的Mac版本中，协同设计gdb可执行文件是不够的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|521083|你必须遵循这个指南才能让它工作：http://www.opensource.apple.com/source/lldb/lldb-69/docs/code-signing.txt|521084|该指南解释了如何在lldb上执行此操作，但对于gdb，该过程完全相同。|521085|entityMap|0|LINK|mutability|MUTABLE|url|http://www.opensource.apple.com/source/lldb/lldb-69/docs/code-signing.txt^0|S|3|0|G|21|0|0|9|4|N|3|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@]|D|@$9|V|A|W|1|X]]|E|$]]|$1|H|3|I|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]]]

In Snow Leopard and later Mac OS versions, it isn't enough to codesign the <code>gdb</code> executable.

You have to follow this guide to make it work: <a href="http://www.opensource.apple.com/source/lldb/lldb-69/docs/code-signing.txt">http://www.opensource.apple.com/source/lldb/lldb-69/docs/code-signing.txt</a>

The guide explains how to do it for <code>lldb</code>, but the process is exactly the same for <code>gdb</code>.

blocks|key|521157|text|当我切换到sudo+gdb+executableFileName！:)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|521158|entityMap^0|5|R|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

It works when I change to <code>sudo gdb executableFileName</code>! :)

blocks|key|521036|text|问题是您没有以root用户身份登录(这是您不想要的)。您需要为gdb创建一个允许访问的证书。按照这个教程，你应该可以开始了……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|521037|http://sourceware.org/gdb/wiki/BuildingOnDarwin|offset|length|521038|如果所有其他方法都失败了，只需使用：sudo+gdb+executableFileName|style|CODE|521039|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1B|0|0|I|R|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@$D|S|E|T|1|U]]|A|$]]|$1|F|3|G|5|6|7|V|8|@$D|W|E|X|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|C]]]]

The problem is that you are not logged in as a root user (which you don't want). You need to create a certificate for gdb to be allowed access. Follow this tutorial and you should be good to go...

<a href="http://sourceware.org/gdb/wiki/BuildingOnDarwin" rel="nofollow noreferrer">http://sourceware.org/gdb/wiki/BuildingOnDarwin</a>

If all else fails, just use: <code>sudo gdb executableFileName</code>

blocks|key|304532|text|This+link有最清晰、最详细的一步一步地让我看不到这个错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|304533|在我的例子中，我必须将这个键作为“系统”键，否则它就不能工作(并不是每个url都提到它)。|304534|此外，杀死taskgated是一种可行的(也是更快的)替代重启的方法。|style|CODE|304535|在开始这个过程并使用brew+uninstall+gdb卸载当前的gdb之前，我还使用了uninstalled+MacPorts。|304536|entityMap|0|LINK|mutability|MUTABLE|url|http://wiki.lazarus.freepascal.org/GDB_on_OS_X_Mavericks_and_Xcode_5|1|https://www.macports.org/guide/chunked/installing.macports.uninstalling.html^0|0|9|0|0|0|5|9|0|A|I|18|K|1|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|10|8|@$A|11|B|12|H|I]]|9|@]|C|$]]|$1|J|3|K|5|6|7|13|8|@$A|14|B|15|H|I]]|9|@$A|16|B|17|1|18]]|C|$]]|$1|L|3|-4|5|6|7|19|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]|T|$5|O|P|Q|C|$R|U]]]]

<a href="http://wiki.lazarus.freepascal.org/GDB_on_OS_X_Mavericks_and_Xcode_5" rel="noreferrer">This link</a> had the clearest and most detailed step-by-step to make this error disappear for me. 

In my case I had to have the key as a "System" key otherwise it did not work (which not every url mentions). 

Also killing <code>taskgated</code> is a viable (and quicker) alternative to having to restart. 

I also <a href="https://www.macports.org/guide/chunked/installing.macports.uninstalling.html" rel="noreferrer">uninstalled MacPorts</a> before I started this process and uninstalled the current gdb using <code>brew uninstall gdb</code>.

blocks|key|304687|text|我需要这个命令来让它在El+Capitan上工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|304688|sudo+security+add-trust+-d+-r+trustRoot+-p+basic+-p+codeSign+-k+/Library/Keychains/System.keychain+~/Desktop/gdb-cert.cer|code-block|syntax|javascript|304689|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I needed this command to make it work on El Capitan:

<pre><code>sudo security add-trust -d -r trustRoot -p basic -p codeSign -k /Library/Keychains/System.keychain ~/Desktop/gdb-cert.cer
</code></pre>

blocks|key|521281|text|我学习了this教程，一切都很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|521282|entityMap|0|LINK|mutability|MUTABLE|url|http://ntraft.com/installing-gdb-on-os-x-mavericks/^0|4|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I followed <a href="http://ntraft.com/installing-gdb-on-os-x-mavericks/" rel="nofollow">this</a> tutorial, and everything is OK.

blocks|key|521398|text|这是一种奇怪的方法，但它对我有效(MacOs+HighSierra+10.13.3)。安装CLion。它附带了gdb。一旦使用终端运行gdb。将gdb程序复制到usr/local/bin/。没有问题的登录，sudo等。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|521399|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

This is a weird approach but it worked for me(MacOs HighSierra 10.13.3). Install CLion. It comes with gdb. Once run the gdb using Terminal. Copy the gdb program to your usr/local/bin/. No problem of signin, sudo etc.

blocks|key|521474|text|按照这里的说明，对于我来说，在macOS+High+Sierra+(10.13.3)上，Codesign+gdb+on+macOS似乎解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|521475|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/gravitylow/fb595186ce6068537a6e9da6d8b5b96d^0|18|L|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Following the instructions here <a href="https://gist.github.com/gravitylow/fb595186ce6068537a6e9da6d8b5b96d" rel="nofollow noreferrer">Codesign gdb on macOS</a> seemed to resolve this issue, for me, on macOS High Sierra (10.13.3).

My app runs fine but gdb fails to debug it with the following error

<pre><code>(gdb) run
Starting program: /path/to/app 
Unable to find Mach task port for process-id 83767: (os/kern) failure (0x5).
</code></pre>

I am on OS X Lion. GDB version is

<pre><code>$ gdb --version
GNU gdb 6.3.50-20050815 (Apple version gdb-1752) (Sat Jan 28 03:02:46 UTC 2012)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".
</code></pre>

gdb fails with "Unable to find Mach task port for process-id" error

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我的应用程序运行良好，但gdb无法对其进行调试，出现以下错误(gdb) runStarting program: /path/to/app Unable to find Mach task port for process-id 83767: (os/kern) failure (0x5).我使用的是OS X Lion。GDB版本为$ gdb --versionGNU gdb 6.3.50-200

问gdb失败，并显示"Unable to find Mach task port for process-id“错误
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