Possible regression introduced in 1.11.801

[oleg-boulanov]

Describe the bug

In #3809, description states that "This is fully backwards compatible. No code changes required."

This may be not entirely correct. For example, after using Bedrock's InvokeModelWithBidirectionalStreamAsync(), Aws::ShutdownAPI(options) lock indefinitely.

Regression confirmed by building and using both 1.11.800 and 1.11.801 version with the same test code.

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

Aws::ShutdownAPI() exits cleanly after limited amount of time

Current Behavior

Aws::ShutdownAPI() does not exit.

Reproduction Steps

Implement Sonic streaming client and unit tests to use InvokeModelWithBidirectionalStreamAsync() with audio streaming.
Aws::InitAPI()
invoke tests
Aws::ShutdownAPI() -- hangs here

Possible Solution

Is there an API call I could use to unblock the resources ShutdownAPI() may be waiting on?

Additional Information/Context

No response

AWS CPP SDK version used

1.11.801

Compiler and Version used

Visual Studio 2026/VC++ toolset v145

Operating System and version

Windows 11

[sbiscigl]

Reproduction Steps

can you provide a reproducible example where it locks? a minimal reproducible example

Visual Studio 2026/VC++ toolset v145

just confirming you are using the CRT client?

[sbiscigl]

actually we pushed a related fix in 1.11.832, so i would also suggest testing against main as the issue may already be resolved.

also you should see a large improvement on CPU usage after picking this up