Follow-up to #5490: preserve sysroot compatibility and validate GCC runtimes - #5491

Follow-up to #5490: preserve sysroot compatibility and validate GCC runtimes#5491

phlax with Copilot wants to merge 2 commits into

copilot/gcc-toolchain-hermetic-fixenvoyproxy/toolshed:copilot/gcc-toolchain-hermetic-fixfrom

copilot/copilotgcc-toolchain-hermetic-fix-againenvoyproxy/toolshed:copilot/copilotgcc-toolchain-hermetic-fix-againCopy head branch name to clipboard