**Describe the bug** googlemock/include/gmock/gmock-spec-builders.h:1713:47: error: unused parameter 'os' [-Werror=unused-parameter] 1713 | std::ostream& os) { | ~~~~~~~~~~~~~~^~ **Steps to reproduce the bug** Build with -Werror=unused-parameter **Does the bug persist in the most recent commit?** 9d21db9e0a60a1ea61ec19331c9bc0dd33e907b1 **What operating system and version are you using?** Linux Mint 20.3 **What compiler and version are you using?** gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1) **What build system are you using?** CMake