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1851-erts-Print-string-that-failed-to-eval.patch
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File 1851-erts-Print-string-that-failed-to-eval.patch of Package erlang
From a393cd27e02df1c5cd8ea4d1035c5efba92dcccb Mon Sep 17 00:00:00 2001 From: Lukas Larsson <lukas@erlang.org> Date: Tue, 9 Aug 2022 16:20:51 +0200 Subject: [PATCH] erts: Print string that failed to eval With the way quoting is done in various shells it is not always obvious what the string entered actually was so we print it to help the user debug. --- erts/preloaded/ebin/init.beam | Bin 61584 -> 61568 bytes erts/preloaded/src/init.erl | 23 +++++++++++++++-------- 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl index 5ea349511d..ceee24e629 100644 --- a/erts/preloaded/src/init.erl +++ b/erts/preloaded/src/init.erl @@ -1225,14 +1225,21 @@ start_it([]) -> ok; start_it({eval,Bin}) -> Str = b2s(Bin), - {ok,Ts,_} = erl_scan:string(Str), - Ts1 = case reverse(Ts) of - [{dot,_}|_] -> Ts; - TsR -> reverse([{dot,erl_anno:new(1)} | TsR]) - end, - {ok,Expr} = erl_parse:parse_exprs(Ts1), - {value, _Value, _Bs} = erl_eval:exprs(Expr, erl_eval:new_bindings()), - ok; + try + {ok,Ts,_} = erl_scan:string(Str), + Ts1 = case reverse(Ts) of + [{dot,_}|_] -> Ts; + TsR -> reverse([{dot,erl_anno:new(1)} | TsR]) + end, + {ok,Expr} = erl_parse:parse_exprs(Ts1), + {value, _Value, _Bs} = erl_eval:exprs(Expr, erl_eval:new_bindings()), + ok + catch E:R:ST -> + erlang:display_string( + binary_to_list( + iolist_to_binary(["Failed to eval: ",Bin,"\n"]))), + erlang:raise(E,R,ST) + end; start_it([_|_]=MFA) -> case MFA of [M] -> M:start(); -- 2.35.3
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