Set string length in string_spec_RSTRING_PTR_read#1346
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Since we do not set the length between the call to `read(fd, buffer, 30)` and `rb_str_modify_expand(str, 53)`, the length of the string is technically zero. If the call to `rb_str_modify_expand` actually expands the buffer, it will overwrite all the contents from the `read`.
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Since we do not set the length between the call to
read(fd, buffer, 30)andrb_str_modify_expand(str, 53), the length of the string is technically zero. If the call torb_str_modify_expandactually expands the buffer, it will overwrite all the contents from theread.