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| author | Ian Lance Taylor <iant@google.com> | 2013-06-26 22:58:03 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <iant@google.com> | 2013-06-26 22:58:03 +0000 |
| commit | d3f5d405beba05b0ca52154d15dc338586df8e9d (patch) | |
| tree | 87581ef83e545999f52828c236d008b1e5d4a340 | |
| parent | e0c96ea0c6a868e20a09f8eb99252e83e06a9658 (diff) | |
compiler: disallow fallthrough in last case of switch.
In spec: A "fallthrough" statement may appear as the last
statement of all but the last clause of an expression switch.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@200440 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/go/gofrontend/parse.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/go/gofrontend/parse.cc b/gcc/go/gofrontend/parse.cc index 0a67bbe4060..5a9feb7280b 100644 --- a/gcc/go/gofrontend/parse.cc +++ b/gcc/go/gofrontend/parse.cc @@ -4523,9 +4523,12 @@ Parse::expr_case_clause(Case_clauses* clauses, bool* saw_default) bool is_fallthrough = false; if (this->peek_token()->is_keyword(KEYWORD_FALLTHROUGH)) { + Location fallthrough_loc = this->location(); is_fallthrough = true; if (this->advance_token()->is_op(OPERATOR_SEMICOLON)) this->advance_token(); + if (this->peek_token()->is_op(OPERATOR_RCURLY)) + error_at(fallthrough_loc, _("cannot fallthrough final case in switch")); } if (is_default) |