Enable C++ branch coverage when using gcov 8 or later. #18879
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There's quite a bit of duplication of helper functions in the various coverage related shell tests; I'll have a go at reducing that in a follow up change. |
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| # Extract gcov's version: the output of `gcov --version` contains the | ||
| # version as a set of major-minor-patch numbers, of which we extract | ||
| # the major version. | ||
| gcov_major_version=$("${GCOV}" --version | sed -n -E -e 's/^.*\s([0-9]+)\.[0-9]+\.[0-9]+\s?.*$/\1/p') |
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Why are you using a different mechanism to extract the major version here?
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It's simply replacing what was removed in #18878.
This approach handles using llvm-cov gcov - the tests don't need to worry about that.
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That said, when I come to consolidate things, I'll probably use the same approach everywhere (no reason not to).
But right now, I don't want to change things everywhere in the tests...
Branch coverage was disabled due to a gcov bug, but this was fixed for GCC 8: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84879. It doesn't make sense to disable all C++ branch coverage for everyone because of a bug in an old GCC version. RELNOTES: Enable C++ branch coverage if gcov version is 8 or newer.
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Branch coverage was disabled due to a gcov bug, but this was fixed for
GCC 8: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84879.
It doesn't make sense to disable all C++ branch coverage for everyone
because of a bug in an old GCC version.