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xo-reader2: bugfix: checkpoint before allocating SSMs

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This commit is contained in:
Roland Conybeare 2026-02-16 11:03:09 -05:00
commit 66d9bc5cd6
18 changed files with 78 additions and 36 deletions
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6
src/reader2/DSequenceSsm.cpp
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@ -22,8 +22,10 @@ namespace xo {
void
DSequenceSsm::start(ParserStateMachine * p_psm)
{
p_psm->push_ssm(DSequenceSsm::make(p_psm->parser_alloc(),
p_psm->expr_alloc()));
DArena::Checkpoint ckp = p_psm->parser_alloc().checkpoint();
p_psm->push_ssm(ckp, DSequenceSsm::make(p_psm->parser_alloc(),
p_psm->expr_alloc()));
/* want to accept anything that starts an expression,
* except that rightbrace '}' ends it
*/