efl internals pass null objects to functions which should not be passed null
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Description

An object function should never be passed null as the object. Example:

evas_object_geometry_get(NULL, &x, &y, &w, &h) is not a valid call.

This is a tracking ticket for the overall issue. eo.c:637 is the line of the error message and can be used with gdb to easily catch instances of it.

Details

Differential Revisions: D6703: elementary: Check for valid object before calling smart calculate
D6702: elementary: Check for valid object before calling efl internal functions
D6638: elementary: Check for valid resize obj before calling size_hint_combined_min_get
D6318: eo: upgrade missing parent WRN to ERR
Commits: D7677 / rEFLc98288c20eba: efl_ui_focus_object: Don't pass NULL to child_focus_set
D6704 / rEFL84423a465ca2: elementary: Check for valid focus manager before starting do loop
D6704 / rEFL364ca1d2b2bb: elementary: Check for valid focus manager before starting do loop
D6701 / rEFL6119cc0c65f0: elementary: Check for valid cursor_rect when (un)setting focus
D6641 / rE5af9485c4f5d: enlightenment: Ensure we have a valid menu comp object before calling
D6710 / rEFL2f9a65844e64: elementary: Check for valid object before calling smart calculate
D6641 / rEf2e0e2d785ce: enlightenment: Ensure we have a valid menu comp object before calling
D6639 / rEFLbe176bd3070e: elementary: Check for valid resize object before calling
D6640 / rEFL124703826f24: elementary: Check for valid resize object
D6637 / rEFL843b5177dfa0: elementary: Check for valid frame object
D6541 / rEFL7a538cbc4a6e: elm/ctxpopup: check for content object before removing callbacks during del
D6538 / rEFLee8d06c806f1: elementary: Avoid passing NULL in some win focus methods
D6317 / rEFL6f6b365c8431: elm_scroll: Avoid calls to non-existing part
D6323 / rEFL209aca1654c1: elm_colorselector: avoid passing null to efl functions
D6321 / rEFLb7cb24c32395: evas: switch to EFL_EVENT_INVALIDATE for event grabber sub-object deletion
D6316 / rEa6277f4f6d45: resolve a number of cases where a null object was passed to efl functions

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Status	Assigned	Task
Open	devilhorns	T7030 efl internals pass null objects to functions which should not be passed null
Resolved	netstar	T7031 elm_code internals pass null to functions
Resolved	bu5hm4n	T7032 eo calls parent_set with null parent during construction
Resolved	zmike	T7033 elm_win passes null to functions
Resolved	bu5hm4n	T7034 focus manager passes null
Resolved	zmike	T7035 elm_list passes null to functions
Resolved	zmike	T7036 elm_colorselector passes null to functions
Open	devilhorns	T7076 calendar widget: do not pass NULL to eo methods
Open	None	T7224 eina safety check failed, obj == NULL in evas_object_event_callback_del_full in lib/evas/canvas/evas_callbacks.c:539
Resolved	bu5hm4n	T7213 efl_ui_calendar crash issue.
Resolved	None	T7265 elm_panel.c: _elm_panel_elm_layout_sizing_eval() safety check failed: efl_finalized_get(obj) is false
Resolved	devilhorns	T7266 evas_object_event_callback_del_full() safety check failed: eo_obj == NULL

zmike created this task.Jun 18 2018, 10:11 AM

zmike triaged this task as High priority.

As of current master, running with EINA_LOG_LEVELS=eo:2 can be used to print messages when this occurs.

zmike added a project: efl: data types.Jun 18 2018, 10:27 AM

zmike added a revision: D6316: resolve a number of cases where a null object was passed to efl functions.Jun 18 2018, 11:36 AM

zmike added a revision: D6317: elm_scroll: Avoid calls to non-existing part.Jun 18 2018, 12:59 PM

zmike added a revision: D6318: eo: upgrade missing parent WRN to ERR.

zmike added a revision: D6321: evas: switch to EFL_EVENT_INVALIDATE for event grabber sub-object deletion.

zmike added a revision: D6323: elm_colorselector: avoid passing null to efl functions.

P220 has a full log of all the errors along with backtraces at the current time (as of D6325).

If you want to pitch in, pick a widget, create a subtask for the widget and assign it to yourself. Most of the work is just adding null checks here and there.

zmike mentioned this in D6326: edje: Demote 'No such part...' from WRN to DBG.Jun 19 2018, 7:33 AM

devilhorns added a commit: rEa6277f4f6d45: resolve a number of cases where a null object was passed to efl functions.Jun 19 2018, 9:38 AM

zmike closed subtask T7032: eo calls parent_set with null parent during construction as Resolved.Jun 19 2018, 10:36 AM

zmike closed subtask T7033: elm_win passes null to functions as Resolved.Jun 19 2018, 10:42 AM

zmike added a commit: rEFLb7cb24c32395: evas: switch to EFL_EVENT_INVALIDATE for event grabber sub-object deletion.

zmike added a commit: rEFL209aca1654c1: elm_colorselector: avoid passing null to efl functions.

zmike closed subtask T7036: elm_colorselector passes null to functions as Resolved.

zmike closed subtask T7035: elm_list passes null to functions as Resolved.

devilhorns added a subscriber: devilhorns.Jun 19 2018, 1:30 PM

Diffusion added a commit: rEFL6f6b365c8431: elm_scroll: Avoid calls to non-existing part.Jun 25 2018, 2:41 AM

I'll get started on this one tomorrow

Diffusion closed subtask T7034: focus manager passes null as Resolved.Jul 2 2018, 9:23 AM