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String refinement: Take a reference to avoid copy #2428

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Jun 27, 2018
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String refinement: Take a reference to avoid copy #2428

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4 changes: 2 additions & 2 deletions src/solvers/refinement/string_constraint_generator_testing.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -95,8 +95,8 @@ exprt string_constraint_generatort::add_axioms_for_is_prefix(
const function_application_exprt::argumentst &args=f.arguments();
PRECONDITION(f.type()==bool_typet() || f.type().id()==ID_c_bool);
PRECONDITION(args.size() == 2 || args.size() == 3);
const array_string_exprt s0 = get_string_expr(args[swap_arguments ? 1 : 0]);
const array_string_exprt s1 = get_string_expr(args[swap_arguments ? 0 : 1]);
const array_string_exprt &s0 = get_string_expr(args[swap_arguments ? 1 : 0]);
const array_string_exprt &s1 = get_string_expr(args[swap_arguments ? 0 : 1]);
const exprt offset =
args.size() == 2 ? from_integer(0, s0.length().type()) : args[2];
return typecast_exprt(add_axioms_for_is_prefix(s0, s1, offset), f.type());
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