On Thu, 4 Sep 2025 14:03:41 GMT, Magnus Ihse Bursie <[email protected]> wrote:

> When calling ExecuteWithLog with a redirection (using > or, possibly, <), the 
> entire command needs to be executed in a subshell, that is, inside a pair of 
> parentheses. This is the callers obligation to ensure, but we have proven 
> multiple times that this is hard to keep in mind, and we got several cases of 
> race conditions due to missing this.
> 
> This PR changes the implementation of ExecuteWithLog so it checks if the 
> command line contains redirection, and automatically add the subshell 
> parentheses in that case. The alternative would have been to always execute 
> in a subshell, but that would have been very expensive on Windows.

I've tested our internal "builds" CI suite tier1-5.

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PR Comment: https://git.openjdk.org/jdk/pull/27096#issuecomment-3254251386

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