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| author | Andrew Thompson <[email protected]> | 2012-09-19 16:54:01 -0400 |
|---|---|---|
| committer | Andrew Thompson <[email protected]> | 2012-09-19 16:54:01 -0400 |
| commit | c83931cbb3516563949d283fe46453a35cd35977 (patch) | |
| tree | f4bd0d7ab0ca6e6e2f15f8f86ea5b5f9bf37ade8 /lib/stdlib | |
| parent | 89ca0448e93beed780bc4c233529ce73063e8337 (diff) | |
| download | otp-c83931cbb3516563949d283fe46453a35cd35977.tar.gz otp-c83931cbb3516563949d283fe46453a35cd35977.tar.bz2 otp-c83931cbb3516563949d283fe46453a35cd35977.zip | |
Fix printing the empty binary at depth 1 with ~W
A case clause ordering problem is causing the empty binary to be
printed as <<...>> rather than the correct <<>> when using ~W with a
depth of 1. Add new tests to verify correct behaviour.
Diffstat (limited to 'lib/stdlib')
| -rw-r--r-- | lib/stdlib/src/io_lib.erl | 4 | ||||
| -rw-r--r-- | lib/stdlib/test/io_SUITE.erl | 17 |
2 files changed, 17 insertions, 4 deletions
diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl index 0252cdf742..ff5862f7b9 100644 --- a/lib/stdlib/src/io_lib.erl +++ b/lib/stdlib/src/io_lib.erl @@ -250,10 +250,10 @@ write_ref(Ref) -> write_binary(B, D) when is_integer(D) -> [$<,$<,write_binary_body(B, D),$>,$>]. -write_binary_body(_B, 1) -> - "..."; write_binary_body(<<>>, _D) -> ""; +write_binary_body(_B, 1) -> + "..."; write_binary_body(<<X:8>>, _D) -> [integer_to_list(X)]; write_binary_body(<<X:8,Rest/bitstring>>, D) -> diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl index bb02a879c2..74fcdcc7d2 100644 --- a/lib/stdlib/test/io_SUITE.erl +++ b/lib/stdlib/test/io_SUITE.erl @@ -27,7 +27,8 @@ 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_lib_fread_literal/1]). + io_fread_newlines/1, otp_8989/1, io_lib_fread_literal/1, + io_lib_print_binary_depth_one/1]). %-define(debug, true). @@ -62,7 +63,8 @@ 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_lib_fread_literal]. + io_fread_newlines, otp_8989, io_lib_fread_literal, + io_lib_print_binary_depth_one]. groups() -> []. @@ -2021,3 +2023,14 @@ io_lib_fread_literal(Suite) when is_list(Suite) -> ?line {done,{error,{fread,input}},_} = io_lib:fread(C2, eof, " d"), ?line {done,{ok,[]},[]} = io_lib:fread(C2, "d\n", " d"), ok. + +io_lib_print_binary_depth_one(doc) -> + "Test binaries printed with a depth of one behave correctly"; +io_lib_print_binary_depth_one(Suite) when is_list(Suite) -> + ?line "<<>>" = fmt("~W", [<<>>, 1]), + ?line "<<>>" = fmt("~P", [<<>>, 1]), + ?line "<<...>>" = fmt("~W", [<<1>>, 1]), + ?line "<<...>>" = fmt("~P", [<<1>>, 1]), + ?line "<<...>>" = fmt("~W", [<<1:7>>, 1]), + ?line "<<...>>" = fmt("~P", [<<1:7>>, 1]), + ok. |