[gcc] Don't emit a missing gcc warning if no checkers are enabled#4179
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bruntib
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Original patch (that itroduces the crash): Ericsson#4179 Revert attempt in Ericsson#4238. The crash occurs because the original patch tries to create config handlers even if they are not supported. This is playing with fire already, but the crash occured when not even the analyzer binary is found. In this patch, these analyzers are skipped from checking if they have any checkers enabled.
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Currently, no gcc checkers are enabled by default, which can make this warning rather annoying:
...even though no checkers were explicitly enabled for gcc. This patch fixes this by disregarding non-functional analyzers if no checkers are enabled for them anyway.