This removes some stack overflows in new test regarding deeply nested variables.
Now in place of crashing vim_to_object/msgpack_rpc_from_object/etc it crashes
clear_tv with stack overflow.
This ought to prevent stack overflow, but I do not see this actually working:
*lua* code crashes with stack overflow when trying to deserialize msgpack from
Neovim, Neovim is fine even if nesting level is increased 100x (though test
becomes very slow); not sure how recursive function may survive this. So it
looks like there are currently only two positive effects:
1. NULL lists are returned as empty (#4596).
2. Functional tests are slightly more fast. Very slightly. Checked for Release
build for test/functional/eval tests because benchmarking of debug mode is
not very useful.
Previously there was file descriptor leak, not detected by sanitizers. Now it is
file descriptor leak with a small memory leak which is detected by ASAN what
fails one of the tests (actually, “ShaDa support code leaves .tmp.z in-place
when there is error in original ShaDa and it has .tmp.a … .tmp.x”, but error is
reported at the next test because leaks are not detected until Neovim exit and
Neovim exit happens when clear()/reset() is called which happens in before_each
only).
One of the reasons is that O_RDONLY is zero, which makes checking whether file
is opened read- or write-only harder. It is not guaranteed that on other system
O_WRONLY will not be zero (e.g. because file can only be opened in read-write
mode).
Moves low-level functions handling to os/fs.c. Adds file.c with a proxy
interface.
Target: while leaving syscalls handling is os.c (partially handled by libuv),
add buffering for reading and writing to file.c.
add tests for synIDattr() with [fg|bg|sp]#
add tests for synIDattr and various #RGB colors
synIDattr: test for ui_rgb_attached()
test: fix tests for synIDattr fg/bg/sp
Problem: Can only get the directory of the current window.
Solution: Add window and tab arguments to getcwd() and haslocaldir().
(Thinca, Hirohito Higashi)
c970330676
https://neovim.io/develop/style-guide.xml#Horizontal_Whitespace
Note that this errors out for e.g.
if (has_mbyte) mb_copy_char((const char_u **)(&f), &t); \
(found in macros.h:151) or
#define ECMD_SET_HELP 0x02 /* set b_help flag of (new) buffer before
(found in ex_cmds.h:11) (note `(new) buffer`). I left this as-is because these
pieces of code are already caught by another rule (braces near if and `/*`-style
comments). Other false positives I found were:
1. `FUNC_ATTR_NONNULL_ARG(1) FUNC_ATTR_WARN_UNUSED_RESULT`: rejected by
requiring type name to start with `[a-zA-Z_]` (this makes `1` not be
incorrectly recognized as a type).
2. `#define FOO(var) (var)`: rejected by creating `cast_line`.
3. `(expr) * (expr)`: rejected by constructing regexp so that unary operators
require no spaces after them.
4. `int f(void) FUNC_ATTR_PURE`: rejected by requiring line to start with
a space.
5. `"." STR(NVIM_VERSION_PATCH) NVIM_VERSION_PRERELEASE`: not rejected, such
thing should be rare and it would be easy to get rid of the false positive by
e.g. breaking line.
Struct literals like `(MyStruct) { 4, 2 }` are not checked:
1. I am not sure whether they are under this rule at all (this is not a cast).
2. It would be hard to get rid of false positives (like the example with `if`
above, but now for *valid* `if() {}`s).
