如何在 postgreSQL 中调试回归测试二进制 pg_regress？

Question

我尝试在 mac 上使用 lldb 在 postgreSQL 中调试 pg_regress。但是，当我使用 lldb 运行 pg_regress 时，测试失败并报告：“等待子进程失败：系统调用中断”

我定制了一个测试计划文件，它只有一个测试 SQL。当我执行 make check 时，回归测试通过了。

下面是通过Clion使用lldb调试时的输出：

============== removing existing temp instance        ==============
============== creating temporary instance            ==============
============== initializing database system           ==============
============== starting postmaster                    ==============
running on port 60848 with PID 16262
============== creating database "regression"         ==============
CREATE DATABASE
ALTER DATABASE
============== running regression test queries        ==============
test some_test               ... failed to wait for subprocesses: Interrupted system call

Process finished with exit code 2

预期的结果应该是

============== removing existing temp instance        ==============
============== creating temporary instance            ==============
============== initializing database system           ==============
============== starting postmaster                    ==============
running on port 60848 with PID 16262
============== creating database "regression"         ==============
CREATE DATABASE
ALTER DATABASE
============== running regression test queries        ==============
test some_test               ... ok

Answer 1

我终于没有找到使用gdb调试多进程pg_regress的方法。调试它的唯一方法是使用基本的 printf 命令。如果有人知道如何使用gdb或lldb来跟踪多进程程序，请提供答案。