diff options
| -rw-r--r-- | cparser/Unblock.ml | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/cparser/Unblock.ml b/cparser/Unblock.ml index 4b1f2262..71d800c3 100644 --- a/cparser/Unblock.ml +++ b/cparser/Unblock.ml @@ -215,14 +215,12 @@ let debug_scope ctx = debug_annot 6L (empty_string :: List.rev_map integer_const ctx) (* Add line number debug annotation if the line number changes. - Labels are ignored since the code before the label can become - unreachable. Add scope debug annotation regardless. *) + Add scope debug annotation regardless. *) - -let add_lineno ?(label=false) ctx prev_loc this_loc s = +let add_lineno ctx prev_loc this_loc s = if !Clflags.option_g then sseq no_loc (debug_scope ctx) - (if this_loc <> prev_loc && this_loc <> no_loc && not label + (if this_loc <> prev_loc && this_loc <> no_loc then sseq no_loc (debug_lineno this_loc) s else s) else s @@ -295,12 +293,15 @@ let rec unblock_stmt env ctx ploc s = {s with sdesc = Sswitch(expand_expr true env e, unblock_stmt env ctx s.sloc s1)} | Slabeled(lbl, s1) -> - let loc,label = if s.sloc <> s1.sloc then - s.sloc,false (* Label and code are on different lines *) - else - ploc,true in - add_lineno ~label:label ctx ploc s.sloc - {s with sdesc = Slabeled(lbl, unblock_stmt env ctx loc s1)} + (* Do not put debug info before label, only after. *) + (* If the label and the statement are on different lines, + put extra debug info before s1, referring to the line of the label. *) + let s1' = + if s.sloc <> s1.sloc then + add_lineno ctx ploc s.sloc (unblock_stmt env ctx s.sloc s1) + else + unblock_stmt env cts ploc s1 in + {s with sdesc = Slabeled(lbl, s1')} | Sgoto lbl -> add_lineno ctx ploc s.sloc s | Sreturn None -> |