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Fix ARGF.read(length) short read [Bug #18074]

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This commit is contained in:
Csaba Henk 2021-08-10 01:07:06 +02:00 • committed by Nobuyoshi Nakada
parent 510c3655c9
commit 8df1ace64a
Notes: git 2021-08-10 11:33:08 +09:00
2 changed files with 10 additions and 2 deletions
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3
io.c
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@ -12512,8 +12512,7 @@ argf_read(int argc, VALUE *argv, VALUE argf)
else if (argc >= 1) {
long slen = RSTRING_LEN(str);
if (slen < len) {
len -= slen;
argv[0] = LONG2NUM(len);
argv[0] = LONG2NUM(len - slen);
goto retry;
}
}

9
test/ruby/test_argf.rb
View file

@ -1110,4 +1110,13 @@ class TestArgf < Test::Unit::TestCase
assert_raise(TypeError, bug11610) {gets}
};
end
def test_sized_read
[@t1, @t2, @t3].each { |t|
open(t.path, "wb") { |f| f.write "t" }
}
ruby('-e', "print ARGF.read(3).size", @t1.path, @t2.path, @t3.path) do |f|
assert_equal("3", f.read)
end
end
end