The note about duplicates attached to analyzer diagnostics feels like an
implementation detail; it's likely just noise from the perspective of an
end-user.
This patch disables it by default, introducing a flag to re-enable it.
gcc/analyzer/ChangeLog:
* analyzer.opt (fanalyzer-show-duplicate-count): New option.
* diagnostic-manager.cc
(diagnostic_manager::emit_saved_diagnostic): Use the above to
guard the printing of the duplicate count.
gcc/ChangeLog:
* doc/invoke.texi (-fanalyzer-show-duplicate-count): New.
gcc/testsuite/ChangeLog:
* gcc.dg/analyzer/CVE-2005-1689-dedupe-issue.c: Add
-fanalyzer-show-duplicate-count.
