Compilation error

[FindHao]

OS: Ubuntu 18.04 x86_64
GCC 7.5.0
I followed the installation guide. When execute bazel test //tcmalloc/..., an error occurred.

In file included from ./tcmalloc/huge_page_aware_allocator.h:25:0,
                 from tcmalloc/huge_page_aware_allocator.cc:15:
./tcmalloc/huge_page_filler.h: In instantiation of 'void tcmalloc::SkippedSubreleaseCorrectnessTracker<kEpochs>::ReportUpdatedPeak(tcmalloc::Length) [with long unsigned int kEpochs = 600; tcmalloc::Length = long unsigned int]':
./tcmalloc/huge_page_filler.h:242:9:   required from 'void tcmalloc::FillerStatsTracker<kEpochs>::Report(tcmalloc::FillerStatsTracker<kEpochs>::FillerStats) [with long unsigned int kEpochs = 600]'
./tcmalloc/huge_page_filler.h:1791:24:   required from 'void tcmalloc::HugePageFiller<TrackerType>::UpdateFillerStatsTracker() [with TrackerType = tcmalloc::PageTracker<tcmalloc::SystemRelease>]'
./tcmalloc/huge_page_filler.h:1289:27:   required from 'void tcmalloc::HugePageFiller<TrackerType>::Contribute(TrackerType*, bool) [with TrackerType = tcmalloc::PageTracker<tcmalloc::SystemRelease>]'
tcmalloc/huge_page_aware_allocator.cc:135:33:   required from here

./tcmalloc/huge_page_filler.h:89:5: error: no matching function for call to 'tcmalloc::TimeSeriesTracker<tcmalloc::SkippedSubreleaseCorrectnessTracker<600>::SkippedSubreleaseEntry, tcmalloc::SkippedSubreleaseCorrectnessTracker<600>::SkippedSubreleaseUpdate, 600>::Report(<brace-enclosed initializer list>)'
     if (tracker_.Report({.confirmed_peak = current_peak})) {
     ^~

Anybody can help?

[ckennelly]

I think this was introduced by ecbc1ee. (@martinmaas )

It's using C++20's designated initializers, which wasn't supported until GCC 8 (per https://gcc.gnu.org/projects/cxx-status.html#cxx2a).