diff options
Diffstat (limited to 'lib/hipe/icode/hipe_icode_exceptions.erl')
-rw-r--r-- | lib/hipe/icode/hipe_icode_exceptions.erl | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/hipe/icode/hipe_icode_exceptions.erl b/lib/hipe/icode/hipe_icode_exceptions.erl index 787fb05415..00caffb24b 100644 --- a/lib/hipe/icode/hipe_icode_exceptions.erl +++ b/lib/hipe/icode/hipe_icode_exceptions.erl @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2004-2009. All Rights Reserved. +%% Copyright Ericsson AB 2004-2011. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -344,6 +344,16 @@ pop_catch(Cs) -> pop_catch_1([[_|C] | Cs]) -> [C | pop_catch_1(Cs)]; +pop_catch_1([[] | Cs]) -> + %% The elements in the list represent different possible incoming + %% stacks of catch handlers to this BB. Before the fixpoint has + %% been found these elements are underapproximations of the true + %% stacks, therefore it's possible for these elements to be too + %% short for the number of pops implied by the code in the BB. + %% We must not fail in that case, so we set pop([]) = []. + %% This fixes find_catches_crash.erl and compiler_tests in the + %% HiPE test suite. + [[] | pop_catch_1(Cs)]; pop_catch_1([]) -> []. |