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-rw-r--r--lib/compiler/src/beam_validator.erl7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl
index 7e5d86c177..9de773542e 100644
--- a/lib/compiler/src/beam_validator.erl
+++ b/lib/compiler/src/beam_validator.erl
@@ -1349,7 +1349,12 @@ branch_arities([Sz,{f,L}|T], Tuple, #vst{current=St}=Vst0)
Vst = branch_state(L, Vst1),
branch_arities(T, Tuple, Vst#vst{current=St}).
-branch_state(0, #vst{}=Vst) -> Vst;
+branch_state(0, #vst{}=Vst) ->
+ %% If the instruction fails, the stack may be scanned
+ %% looking for a catch tag. Therefore the Y registers
+ %% must be initialized at this point.
+ verify_y_init(Vst),
+ Vst;
branch_state(L, #vst{current=St,branched=B}=Vst) ->
Vst#vst{
branched=case gb_trees:is_defined(L, B) of