diff options
| -rw-r--r-- | compile.c | 25 | ||||
| -rw-r--r-- | test/coverage/test_coverage.rb | 14 |
2 files changed, 38 insertions, 1 deletions
@@ -7449,7 +7449,30 @@ compile_iter(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE *const node, in ISEQ_TYPE_BLOCK, line); CHECK(COMPILE(ret, "iter caller", node->nd_iter)); } - ADD_LABEL(ret, retry_end_l); + + { + // We need to put the label "retry_end_l" immediately after the last "send" instruction. + // This because vm_throw checks if the break cont is equal to the index of next insn of the "send". + // (Otherwise, it is considered "break from proc-closure". See "TAG_BREAK" handling in "vm_throw_start".) + // + // Normally, "send" instruction is at the last. + // However, qcall under branch coverage measurement adds some instructions after the "send". + // + // Note that "invokesuper" appears instead of "send". + INSN *iobj; + LINK_ELEMENT *last_elem = LAST_ELEMENT(ret); + iobj = IS_INSN(last_elem) ? (INSN*) last_elem : (INSN*) get_prev_insn((INSN*) last_elem); + while (INSN_OF(iobj) != BIN(send) && INSN_OF(iobj) != BIN(invokesuper)) { + iobj = (INSN*) get_prev_insn(iobj); + } + ELEM_INSERT_NEXT(&iobj->link, (LINK_ELEMENT*) retry_end_l); + + // LINK_ANCHOR has a pointer to the last element, but ELEM_INSERT_NEXT does not update it + // even if we add an insn to the last of LINK_ANCHOR. So this updates it manually. + if (&iobj->link == LAST_ELEMENT(ret)) { + ret->last = (LINK_ELEMENT*) retry_end_l; + } + } if (popped) { ADD_INSN(ret, line_node, pop); diff --git a/test/coverage/test_coverage.rb b/test/coverage/test_coverage.rb index 1a21235d0a..a2a7718a30 100644 --- a/test/coverage/test_coverage.rb +++ b/test/coverage/test_coverage.rb @@ -964,4 +964,18 @@ class TestCoverage < Test::Unit::TestCase p :NG end; end + + def test_tag_break_with_branch_coverage + result = { + :branches => { + [:"&.", 0, 1, 0, 1, 6] => { + [:then, 1, 1, 0, 1, 6] => 1, + [:else, 2, 1, 0, 1, 6] => 0, + }, + }, + } + assert_coverage(<<~"end;", { branches: true }, result) + 1&.tap do break end + end; + end end |