I recently had to test GCC 9 and fixed one of the worst offenders in terms of number of warnings when compiling JSC. See: https://bugs.webkit.org/show_bug.cgi?id=195798
On Mon, Mar 18, 2019, 22:36 Michael Catanzaro <[email protected]> wrote: > Hi, > > GCC 9 has new -Wpessimizing-move ("warning: moving a local object in a > return statement prevents copy elision") and -Wredundant-move > ("warning: redundant move in return statement") warnings. These are > enabled by -Wextra (which we use) and will be triggered by code like: > > return WTFMove(foo); > > when foo is a copyable type. This idiom is only appropriate if foo is a > noncopyable (move-only) type. We have many, many instances of such > code. I'm trying to fix them. Please don't add more! (It's easy enough > to disable the warnings, but they're there for a reason.) > > Thanks, > > Michael > > > _______________________________________________ > webkit-dev mailing list > [email protected] > https://lists.webkit.org/mailman/listinfo/webkit-dev >
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