Replace fallthrough comments with new SAL_FALLTHROUGH macro

...which (in LIBO_INTERNAL_ONLY) for Clang expands to [[clang::fallthrough]] in
preparation of enabling -Wimplicit-fallthrough.  (This is only relevant for
C++11, as neither C nor old C++ has a way to annotate intended fallthroughs.)

Could use BOOST_FALLTHROUGH instead of introducing our own SAL_FALLTHROUGH, but
that would require adding back in dependencies on boost_headers to many
libraries where we carefully removed any remaining Boost dependencies only
recently.  (At least make SAL_FALLTHROUGH strictly LIBO_INTERNAL_ONLY, so its
future evolution will not have any impact on the stable URE interface.)  C++17
will have a proper [[fallthroug]], eventually removing the need for a macro
altogether.

Change-Id: I342a7610a107db7d7a344ea9cbddfd9714d7e9ca

1 files changed, 2 insertions, 2 deletions

diff --git a/i18npool/source/search/textsearch.cxx b/i18npool/source/search/textsearch.cxx
index 5791ff6e2735..c71dea35a3dd 100644
--- a/i18npool/source/search/textsearch.cxx
+++ b/i18npool/source/search/textsearch.cxx
@@ -251,7 +251,7 @@ void TextSearch::setOptions2( const SearchOptions2& rOptions ) throw( RuntimeExc
 
         default:
             SAL_WARN("i18npool","TextSearch::setOptions2 - default what?");
-            // fallthru
+            SAL_FALLTHROUGH;
         case SearchAlgorithms2::ABSOLUTE:
             fnForward = &TextSearch::NSrchFrwrd;
             fnBackward = &TextSearch::NSrchBkwrd;
@@ -272,7 +272,7 @@ void TextSearch::setOptions( const SearchOptions& rOptions ) throw( RuntimeExcep
             break;
         default:
             SAL_WARN("i18npool","TextSearch::setOptions - default what?");
-            // fallthru
+            SAL_FALLTHROUGH;
         case SearchAlgorithms_ABSOLUTE:
             nAlgorithmType2 = SearchAlgorithms2::ABSOLUTE;
             break;