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author | NAKAMURA Usaku <usa@ruby-lang.org> | 2021-12-31 19:48:24 +0900 |
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committer | NAKAMURA Usaku <usa@ruby-lang.org> | 2021-12-31 19:48:24 +0900 |
commit | 426266af2cbfba8d42a82abcce1bb3ca6c039e87 (patch) | |
tree | e76143fff5a4ec330c1752f95bdca2beef27ee23 /io.c | |
parent | 7d3cff6e41d73a00f3d0fdb337743f654e42f1a8 (diff) |
merge revision(s) fdf39963490cf2cf95b30d91bb9b35964c2c2350: [Backport #18421]
Empty and return the buffer if zero size is given [Bug #18421]
In `IO#readpartial` and `IO#read_nonblock`, as well as `IO#read`.
---
io.c | 8 ++++++--
test/ruby/test_io.rb | 21 +++++++++++++++++++++
2 files changed, 27 insertions(+), 2 deletions(-)
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -2822,8 +2822,10 @@ io_getpartial(int argc, VALUE *argv, VALUE io, int no_exception, int nonblock) GetOpenFile(io, fptr); rb_io_check_byte_readable(fptr); - if (len == 0) + if (len == 0) { + io_set_read_length(str, 0, shrinkable); return str; + } if (!nonblock) READ_CHECK(fptr); @@ -2965,8 +2967,10 @@ io_read_nonblock(rb_execution_context_t *ec, VALUE io, VALUE length, VALUE str, GetOpenFile(io, fptr); rb_io_check_byte_readable(fptr); - if (len == 0) + if (len == 0) { + io_set_read_length(str, 0, shrinkable); return str; + } n = read_buffered_data(RSTRING_PTR(str), len, fptr); if (n <= 0) { |