Memory corruption running gui_mainfcn.m
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This looks like a memory corruption problem, but I could use some help identifying what's going on and how to debug this.
Quick Summary
The C:\Program Files\MATLAB\R2018a\toolbox\matlab\guide\gui_mainfcn.m has this struct initialization on line 31 (at least in my copy):
gui_StateFields = {'gui_Name'
'gui_Singleton'
'gui_OpeningFcn'
'gui_OutputFcn'
'gui_LayoutFcn'
'gui_Callback'};
After that line executes, I set a breakpoint and evaluate gui_StateFields in the Command Window. The result I get is this:
K>> gui_StateFields
gui_StateFields =
6×1 cell array
{'敤䙒㸀 ' }
{'gui_Singleton' }
{'gui_OpeningFcn'}
{'gui_OutputFcn' }
{'gui_LayoutFcn' }
{'gui_Callback' }
While running this script, MATLAB did crash a couple times, forcing me to restart it.
A couple questions:
- What could cause the value of the first cell to be different, right after the struct initialization is executed?
- Is there a tool for looking at the memory space of the MATLAB script?
A fix isn't crucial, this is just a demo I'm trying. However, I want to understand what is going on and how to debug this, in case it occurs again when it is a critical project.
Additional Details
Running this on:
Windows 10 Pro 64 bit Version 1803
MATLAB Version: 9.4.0.885841 (R2018a) Update 3, 64-bit, Home License
The script I'm running is calling the function with the following input:
gui_State =
struct with fields:
gui_Name: 'bladeRF_rx_gui'
gui_Singleton: 1
gui_OpeningFcn: @bladeRF_fft_OpeningFcn
gui_OutputFcn: @bladeRF_fft_OutputFcn
gui_LayoutFcn: []
gui_Callback: @frequency_Callback
varargin =
1×4 cell array
Columns 1 through 3
{'frequency_Callb…'} {1×1 UIControl} {1×1 matlab.ui.eventdata.ActionData}
Column 4
{1×1 struct}
The problem occurs here (from C:\Program Files\MATLAB\R2018a\toolbox\matlab\guide\gui_mainfcn.m):
function varargout = gui_mainfcn(gui_State, varargin)
% GUI_MAINFCN...
gui_StateFields = {'gui_Name'
'gui_Singleton'
'gui_OpeningFcn'
'gui_OutputFcn'
'gui_LayoutFcn'
'gui_Callback'};
gui_Mfile = '';
% breakpoint next line
for i=1:length(gui_StateFields)
if ~isfield(gui_State, gui_StateFields{i})
% ERROR here. '敤䙒㸀 ' instead of 'gui_Name' in struct
error(message('MATLAB:guide:StateFieldNotFound', gui_StateFields{ i }, gui_Mfile));
elseif isequal(gui_StateFields{i}, 'gui_Name')
gui_Mfile = [gui_State.(gui_StateFields{i}), '.m'];
end
end
And the error I get:
Error using gui_mainfcn (line 40)
Could not find field '敤䙒㸀 ' in the gui_State struct in GUI MATLAB-file
I have tried restarting MATLAB, but I haven't tried rebooting yet.
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2019-2-8
2019-2-8
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