As the last observation in PR 82063 Jim points out that
Both -Warray-bounds and -Warray-bounds= are listed in the c.opt file as being enabled by -Wall, but they are the same option, and it causes this one option to be processed twice in the C_handle_option_auto function in the generated options.c file. It gets set to the same value twice, so it does work as intended, but this is wasteful. I have removed the redundant -Wall from the first option and committed the change as obvious in r262912. Martin
