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* Fix warnings: ex_getln.c: init_history(): Double free: FP.Eliseo Martínez2014-11-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem : Double free @ 4249. Diagnostic : False positive. Rationale : Codepath leading to error contains two consecutive iterations in which `if (--j < 0)` is true. That executes `free` two consecutive times with the same value (hislen - 1) for j, with leads to double free. Now, that can only happen with j == 0 && hislen == 1. And that would imply j == hisidx[type] too, which would take the following break. So, the error codepath cannot really happen, but the compiler cannot deduce the last implication. Resolution : We have two possible solutions for this: 1.- Comparing value of j before and after updating it, and breaking out of iteration if equal. That changes nothing in functionality, but teaches the compiler his proposed error codepath is impossible. 2.- Nullify pointer after freeing. This way, the compiler still thinks his error codepath is possible, but it's not an error anymore, as free(NULL) is a no-op. We opt for solution 2, as solution 1 requires adding logic that adds nothing (and having to explain that clearly in aside comments) just for the purpose of silencing warning. On the other hand, solution 2 improves the code, adding something considered good practice in any case, and therefore doesn't require further explanation.
* Fix warnings: ex_eval.c: report_pending(): Np dereference: FP.Eliseo Martínez2014-11-11
| | | | | | | | | | | | | | | | Problem : Dereference of null pointer @ 711. Diagnostic : False positive. Rationale : Codepath producing error invokes this function with values `action=RPC_DISCARD, pending=CSTP_FINISH, value=NULL`. Now, for some reason, the analyzer is remembering that `value` is null, and that `action` is `RPC_DISCARD`, but it's not remembering that `pending` is `CSTP_FINISH`. Then, it's taking the wrong branch in the switch for `pending`. That path would never occur invocating the function with those values. Resolution : Assert function precondition between `pending` and `value`. This is, let the compiler know that `value` being null implies `pending` not containing `CSTP_THROW`.
* Fix warnings: ex_docmd.c: eval_vars(): Unitialized arg: FP.Eliseo Martínez2014-11-11
| | | | | | | | | Problem : Uninitialized argument value @ 7704. Diagnostic : False positive. Rationale : Error occurs if `switch(spec_idx)` doesn't enter any case, which should not occur after `spec_idx = find_cmdline_var(...)` returned non-negative. Resolution : Add default clause to switch and error if reached.
* Fix warnings: ex_cmds2.c: do_source(): Unitialized arg (2): MI.Eliseo Martínez2014-11-11
| | | | | | | | | Problem : Uninitialized argument value @ 2485. Uninitialized argument value @ 2507. Diagnostic : Multithreading issues. Rationale : Error can only occur if globals `do_profiling`, `time_fd` are modified while function is executing. Resolution : Use local copy of globals.
* Fix warnings: ex_cmds2.c: do_source(): Np dereference: FP.Eliseo Martínez2014-11-11
| | | | | | | | | Problem : Dereference of null pointer @ 2462. Diagnostic : False positive. Rationale : Error occurred if neither loop neither following if were entered (this implied `script_items.ga_len < 0`, which should not be possible). Resolution : Assert not negative length (loop or if entered).
* Fix warnings: ex_cmds.c: do_ecmd(): Np dereference: FP.Eliseo Martínez2014-11-11
| | | | | | | Problem : Dereference of null pointer @ 2768. Diagnostic : False positive. Rationale : `win_valid(oldwin)` implies `oldwin` not null. Resolution : Assert `oldwin` not null.
* Fix warnings: ex_cmds.c: do_ascii(): Garbage value (2): MI.Eliseo Martínez2014-11-11
| | | | | | | | | Problems : Assigned value is garbage or undefined @ 127. Assigned value is garbage or undefined @ 152. Diagnostic : Multithreading issues. Rationale : Error could only occurr if global `enc_utf8` changed while the function is executing. Resolution : Use local copy of global var.
* shell: Use job_write_cb for closing stdinThiago de Arruda2014-11-10
| | | | | | | | | | Commit @45525853d352 removed usage of the `job_write_cb` for closing stdin due to a memory error, but that doesn't work anymore because `job_close_in` closes stdin immediately, possibly trimming input data before it is fully written. Since most memory issues with jobs have been fixed, re-add the `job_write_cb` call to ensure stdin is only closed when it should. Also add tests for scenarios where using the callback makes a difference.
* eval: Return an empty list from systemlist() when there's no outputThiago de Arruda2014-11-10
| | | | This is the behavior on vim's `systemlist()`.
* Merge pull request #1429 from oni-link/fix.job_start.leakJustin M. Keyes2014-11-09
|\ | | | | Fix memory leak in job_start().
| * Try to fix problem found in the Travis Ci build.oni-link2014-11-09
| | | | | | | | | | | | | | An uv_pipe_t handle for a WStream could be left open for a particular code path. Patch by tarruda.
| * Mark some function arguments as [consumed] in the docs.oni-link2014-11-09
| | | | | | | | | | The argument argv of job_start() and channel_from_job() will be freed. Mark them as such in the comments of this functions.
| * job: Fix memory leak in job_start().oni-link2014-11-09
| | | | | | | | | | If a new job cannot be started because no slots are free, we return early without freeing the argv argument.
* | Merge pull request #1403 from fwalch/version-flagsJustin M. Keyes2014-11-09
|\ \ | | | | | | version: Add compilation info.
| * | version: Add compilation info.Florian Walch2014-11-09
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* | | Merge pull request #1389 from elmart/clang-analysis-fixesJustin M. Keyes2014-11-09
|\ \ \ | |/ / |/| | Fix clang analysis warnings.
| * | Fix warnings: edit.c: ins_bs(): Garbage result: MI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | Problem : Result of operation is garbage or undefined @ 7460. Diagnostic : Multithreading issue. Rationale : Problem occurs if any of globals `enc_utf8`, `p_deco is modified while function is executing. Resolution : Use local copy of globals.
| * | Fix warnings: edit.c: replace_do_bs(): Garbage value: MI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | Problem : Assigned value is garbage or undefined @ 6359. Diagnostic : Multithreading issue. Rationale : Problem only occurs if global `State` changes while function is executing. Resolution : Use local copy of global in function.
| * | Fix warnings: edit.c: mb_replace_pop_ins(): Unitilialized arg: FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Problem : Uninitialized argument value @ 6296. Diagnostic : False positive. Rationale : Error occurs if n <= 1. That's not possible because n >= 1 due to `MB_BYTE2LEN` postcondition and n != 1 because we are in the else branch. Resolution : Assert n > 1.
| * | Fix warnings: edit.c: ins_compl_get_exp(): Np dereference (2): FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problems : Dereference of null pointer @ 3615. Dereference of null pointer @ 3764. Diagnostic : False positives. Rationale : `ins_buf` is local static, so maintains value between calls. This function will be called first when `compl_started` is false, and in that case it initializes `ins_buf`. After that, it can be called multiple times with `compl_started` true, where `ins_buf` will be updated but not to null. So, when arriving to both points, `ins_buf` should never be null. Resolution : Assert `ins_buf` at both points.
| * | Fix warnings: edit.c: ins_compl_next_buf(): Np dereference: FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Problem : Dereference of null pointer @ 3234. Diagnostic : False positive. Rationale : `wp` is local static, so maintains value between calls. First time function is called for a given flag will have `buf == curbuf`, implying `wp` initialization. Resolution : Assert variable always having been initialized.
| * | Fix warnings: regexp.c: match_with_backref(): Nonnull violation: FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Argument with 'nonnull' attribute passed null @ 5632. http://neovim.org/doc/reports/clang/report-041a0e.html#EndPath. Diagnostic: False positive. Rationale : `p = reg_getline(clnum)` above should not be null, because `clnum` starts at `start_lnum` and only increments after that. Resolution: Assert p not null.
| * | Fix warnings: regexp.c: br_regcomp(): Np dereference: MI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Dereference of null pointer @ 1312. http://neovim.org/doc/reports/clang/report-b1d09a.html#EndPath Diagnostic: Multithreading issue. Rationale : Suggested error path contains two succesive calls to `regnext(scan)`, first of which returning nonnull, the second one returning null. This can only occur if global `reg_toolong` accesed in `regnext()` changes between the calls. Resolution: Use local variable to cache first `regnext(scan)` result. Note that this change alters function semantics, as now function only issues one call instead of two, reusing the result for the second time. This shouldn't be a problem, though, as new semantics should be in fact be better.
| * | Fix warnings: regexp.c: skip_regexp: Np dereference: FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Derefence of null pointer @ 1208. http://neovim.org/doc/reports/clang/report-24b5ca.html#Path10 Diagnostic: False positive. Rationale : Error is reported to happen if after `if (*newp == NULL) {` body, `*newp` continues being NULL, and false branch of following `if (*newp != NULL)` is taken. Now, `vim_strsave` cannot return NULL, so error cannot happen. Resolution: Remove dead code (leftover since OOM refactors).
| * | Fix warnings: ops.c: cursor_pos_info(): Various (2): MI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problems: Result of operation is garbage or undefined @ 5087. http://neovim.org/doc/reports/clang/report-2e3118.html#EndPath Result of operation is garbage or undefined @ 5149. Diagnostic: Multithreading issues. Rationale : All reported problems can only occur if accesed globals change state while executing function, which could only happen in a multithreaded environment. Resolution: Use local variables (copy globals on entry). Note that this change alters function semantics, as now function only depends on global values at entry time. This shouldn't be a problem, though, as new semantics should be in fact better.
| * | Fix warnings: ops.c: do_join(): Nonnull violation: FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Argument with 'nonnull' attribute passed null @ 3540. http://neovim.org/doc/reports/clang/report-fc14e0.html#EndPath. Diagnostic: False potitive. Rationale : `count` should be >= 2 by function precondition. Resolution: Assert precondition.
| * | Fix warnings: screen.c: draw_tabline(): Dead assignment: HI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Dead assignment @ 7711. http://neovim.org/doc/reports/clang/report-835eb6.html#EndPath Diagnostic: Harmless issue. Rationale : `scol` is only used within `FOR_ALL_TABS` body, which assigns another value to `scol` at the beginning of each iteration. If `FOR_ALL_TABS` body would not execute (no tabs) nothing harmful would happen, as code following `FOR_ALL_TABS` doesn't use `scol`. Resolution: Remove.
| * | Fix warnings: screen.c: showmode(): Dead assignment: HI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Dead assignment @ 7535. http://neovim.org/doc/reports/clang/report-19a5cd.html#EndPath Diagnostic: Harmless issue. Rationale : `length = msg_col;` is unconditionally executed after this. Resolution: Remove assignment.
| * | Fix warnings: screen.c: win_line(): Dead assigment: HI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Dead assigment. http://neovim.org/doc/reports/clang/report-7362ba.html#EndPath Diagnostic: Harmless issue. Rationale : `boguscols` is in fact unread by downstream code. Resolution: Comment out. This is preferred here over just removing the line because involved logic is complex, and future readers of this code could find this extra knowledge useful to understand what the code is doing.
| * | Fix warnings: screen.c: win_line(): Dead initialization: HI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Dead initialization @ 3477. http://neovim.org/doc/reports/clang/report-94b736.html#EndPath Diagnostic: Harmless issue. Rationale : `len` is assigned a new value just some lines below. So, this just seems something due to old-style variable declarations. Resolution: We could just remove initialization, but prefer moving declaration down to point of initialization.
| * | Fix warnings: screen.c: redraw_asap(): Various (6): MI.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problems: Argument with 'nonnull' attribute passed null @ 277. http://neovim.org/doc/reports/clang/report-9c3614.html#EndPath Result of operation is garbage or undefined @ 281. http://neovim.org/doc/reports/clang/report-45efbf.html#EndPath Argument with 'nonnull' attribute passed null @ 306. http://neovim.org/doc/reports/clang/report-ffb84f.html#EndPath Result of operation is garbage or undefined @ 311. http://neovim.org/doc/reports/clang/report-d04333.html#EndPath Argument with 'nonnull' attribute passed null @ 315. http://neovim.org/doc/reports/clang/report-786819.html#EndPath Uninitialized argument value @ 328. http://neovim.org/doc/reports/clang/report-2a5506.html#EndPath Diagnostic: Multithreading issues. Rationale : All reported problems can only occur if accesed globals change state while executing function, which could only happen in a multithreaded environment. Resolution: Use local variables. Note that this change alters function semantics, as now function only depends on global values at entry time. This shouldn't be a problem, though, as new semantics should be in fact better.
| * | Fix warnings: cursor_shape.c: parse_shape_opt(): Garbage value: FP.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problem: Assigned value is garbage or undefined @ 187. http://neovim.org/doc/reports/clang/report-7b7d61.html#EndPath. Diagnostic: False positive. Rationale : `colonp`, must be `>= modep, or null` by `vim_strchr` postcondition. At this point we also it's not null and it's not equal to `modep`, by previous code. So, it must be `> modep`. Resolution: Assert `colonp > modep`.
* | | build: pull iconv detection into its own FindIconv.cmake fileJohn Szakmeister2014-11-08
| |/ |/| | | | | | | This will provide better control for those who may want to alter which one gets used.
* | msgpack-rpc: Close channel on invalid msgpack RPCRui Abreu Ferreira2014-11-07
| | | | | | | | | | | | - When an invalid msgpack RPC msg is received from a channel we now close that channel all calls on that channel fail with an error message.
* | msgpack-rpc: Don't try to write into a closed channelRui Abreu Ferreira2014-11-07
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* | msgpack-rpc: Fix typo in validation messageRui Abreu Ferreira2014-11-07
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* | msgpack-rpc: Return from msgpack_rpc_validate on errorRui Abreu Ferreira2014-11-07
| | | | | | | | | | - When validating a msgpack msg we need to return on the first error otherwise we can SEGFAULT with invalid checks
* | job: Let vimL jobsend() accept a list.Scott Prager2014-11-07
| | | | | | | | | | | | | | | | Use save_tv_as_string(), same as vimL system(). This also makes jobsend() more liberal in what it can accept. For example, `jobsend(j, 123)` is now valid. Closes #1176
* | job: Make v:job_data[2] a list.Scott Prager2014-11-07
| | | | | | | | | | | | | | | | Factor out string_to_list() from f_system()'s implementation and use that to set job_data. This has the technical advantage of preserving NULs, and may be more convenient for users. Required for #1176.
* | job: Read job data line-wise.Scott Prager2014-11-07
| | | | | | | | Only read up to the last newline in push_job_event().
* | rstream: Expose rstream_read_ptr and _available.Scott Prager2014-11-07
| | | | | | | | | | Needed for accessing this information without direct access to the rstream_buffer.
* | memory: implement xmemrchr()Scott Prager2014-11-07
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* | job: Only force-close stdout/stderr when the job exitsThiago de Arruda2014-11-07
| | | | | | | | | | stdout/stderr should only be closed after the job truly exits, or else we can lose data sent by it.
* | Review: Remove long_u: memfile: Add to clint.Eliseo Martínez2014-11-06
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* | Review: Remove long_u: memfile: Refactor: blocknr_T: long -> int64_t.Eliseo Martínez2014-11-06
| | | | | | | | | | Replace long with int64_t. Apart from being convenient, not using long is required by clint.
* | Review: Remove long_u: memfile: Refactor: int -> bool.Eliseo Martínez2014-11-06
| | | | | | | | Replace int with bool where appropriate.
* | Review: Remove long_u: memfile: Refactor: bhdr_T.bh_data: char_u* -> void*.Eliseo Martínez2014-11-06
| | | | | | | | | | This, in addition to being more correct, allows removing a lot of explicit casts.
* | Review: Remove long_u: memfile: Refactor: mf_hashtab_T.mht_fixed: Remove.Eliseo Martínez2014-11-06
| | | | | | | | Unused since 457bb2615154946d273d75e07f5d5a936f50ede0.
* | Review: Remove long_u: memfile: Refactor: long_u -> size_t.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - memfile_defs.h: * hashtab_T: mht_mask: long_u -> size_t. Masks are used to truncate keys to a value adequate for an index in the array of entries. Value of the mask plus one is the current size of the array. Both of those reasons imply the soundness of size_t for this type. * hashtab_T: mht_count: long_u -> size_t. - memfile.c: * total_mem_used: long_u -> size_t. * mf_hash_free_all: idx: long_u -> size_t. * mf_hash_add_item: idx: long_u -> size_t. * mf_hash_find: idx: long_u -> size_t. * mf_hash_grow: i: long_u -> size_t. * mf_hash_grow: j: long_u -> size_t.
* | Review: Remove long_u: memfile: Enable -Wconversion.Eliseo Martínez2014-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | - Add memfile.c to converted files list. - Fix conversion issues: * bhdr_T : bh_page_count : int -> unsigned. * bhdr_T : bh_flags : char -> unsigned. * mf_new() : page_count : int -> unsigned. * mf_get() : page_count : int -> unsigned. * mf_release() : page_count : int -> unsigned. * mf_alloc_bhdr() : page_count : int -> unsigned. * mf_trans_add() : page_count : int -> unsigned. * mf_put() : flags : int -> unsigned.
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