diff options
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/src/io_lib_fread.erl | 8 | ||||
| -rw-r--r-- | lib/stdlib/test/io_SUITE.erl | 24 |
2 files changed, 30 insertions, 2 deletions
diff --git a/lib/stdlib/src/io_lib_fread.erl b/lib/stdlib/src/io_lib_fread.erl index 52aa4d073c..137759bbab 100644 --- a/lib/stdlib/src/io_lib_fread.erl +++ b/lib/stdlib/src/io_lib_fread.erl @@ -121,6 +121,14 @@ fread([C|Format], [C|Line], N, Results) -> fread(Format, Line, N+1, Results); fread([_F|_Format], [_C|_Line], _N, _Results) -> fread_error(input); +fread([_|_]=Format, [], N, Results) -> + {more,Format,N,Results}; +fread([_|_], eof, _N, []) -> + %% This is at start of format string so no error. + eof; +fread([_|_], eof, _N, _Results) -> + %% This is an error as there is no more input. + fread_error(input); fread([], Line, _N, Results) -> {ok,reverse(Results),Line}. diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl index 54a98985cd..03dc655426 100644 --- a/lib/stdlib/test/io_SUITE.erl +++ b/lib/stdlib/test/io_SUITE.erl @@ -27,7 +27,7 @@ otp_6282/1, otp_6354/1, otp_6495/1, otp_6517/1, otp_6502/1, manpage/1, otp_6708/1, otp_7084/1, otp_7421/1, io_lib_collect_line_3_wb/1, cr_whitespace_in_string/1, - io_fread_newlines/1, otp_8989/1]). + io_fread_newlines/1, otp_8989/1, io_lib_fread_literal/1]). %-define(debug, true). @@ -62,7 +62,7 @@ all() -> otp_6282, otp_6354, otp_6495, otp_6517, otp_6502, manpage, otp_6708, otp_7084, otp_7421, io_lib_collect_line_3_wb, cr_whitespace_in_string, - io_fread_newlines, otp_8989]. + io_fread_newlines, otp_8989, io_lib_fread_literal]. groups() -> []. @@ -1995,3 +1995,23 @@ otp_8989(Suite) when is_list(Suite) -> ?line "Hel " = fmt("~-4.*s", [3,Hello]), ?line "Hel " = fmt("~*.*s", [-4,3,Hello]), ok. + +io_lib_fread_literal(doc) -> + "OTP-9439 io_lib:fread bug for literate at end"; +io_lib_fread_literal(Suite) when is_list(Suite) -> + ?line {more,"~d",0,""} = io_lib:fread("~d", ""), + ?line {error,{fread,integer}} = io_lib:fread("~d", " "), + ?line {more,"~d",1,""} = io_lib:fread(" ~d", " "), + ?line {ok,[17],"X"} = io_lib:fread(" ~d", " 17X"), + %% + ?line {more,"d",0,""} = io_lib:fread("d", ""), + ?line {error,{fread,input}} = io_lib:fread("d", " "), + ?line {more,"d",1,""} = io_lib:fread(" d", " "), + ?line {ok,[],"X"} = io_lib:fread(" d", " dX"), + %% + ?line {done,eof,_} = io_lib:fread([], eof, "~d"), + ?line {done,eof,_} = io_lib:fread([], eof, " ~d"), + %% + ?line {done,eof,_} = io_lib:fread([], eof, "d"), + ?line {done,eof,_} = io_lib:fread([], eof, " d"), + ok. |