Regression Tests: Run-Time Check Failure #3 - The variable 'ls' is being used without being initialized. #97365

New Issue

Pierre Grimme · 2022-04-15T18:47:42+02:00

Pierre Grimme commented

2022-04-15 18:47:42 +02:00

System Information
Operating system: Windows 10 21H2 Build 19044.1645
Graphics card: Nvidia GT 610
Renderer: GeForce GT 610/PCIe/SSE2
Version: 4.5.0 NVIDIA 391.35

Blender Version
Broken: (example: 3.20 Alpha, 180163c4e4, private branch without changes, 2022-04-14)

Short description of error
Building RUN_TESTS in Visual Studio will fail on certain tests.

Exact steps for others to reproduce the error

To check for yourself run the following commad from a cli in your build directory:

ctest -R cycles_light_cpu -C debug --debug

A part of the tests will pass, but some will fail. An error window will appear, saying: "Run-Time Check Failure #3 - The variable 'ls' is being used without being initialized."

To manually check out this failure, take a look at the debug output and check which .blend file is loaded and if the test fails.

I choose following file to load into blender.

\lib\tests\render\light\spot_light.blend

Next hit F12 to render this test file.

Location in source
The bug is located in shade_volume.h Line 947. ls.P is passed as a parameter there

Setup
All testing was done in the DEBUG-x64 target in VS.
Bug still exists in 7484f274dc

**System Information** Operating system: Windows 10 21H2 Build 19044.1645 Graphics card: Nvidia GT 610 Renderer: GeForce GT 610/PCIe/SSE2 Version: 4.5.0 NVIDIA 391.35 **Blender Version** Broken: (example: 3.20 Alpha, 180163c4e448, private branch without changes, 2022-04-14) **Short description of error** Building RUN_TESTS in Visual Studio will fail on certain tests. **Exact steps for others to reproduce the error** To check for yourself run the following commad from a cli in your build directory: ``` ctest -R cycles_light_cpu -C debug --debug ``` A part of the tests will pass, but some will fail. An error window will appear, saying: "Run-Time Check Failure #3 - The variable 'ls' is being used without being initialized." To manually check out this failure, take a look at the debug output and check which .blend file is loaded and if the test fails. I choose following file to load into blender. ``` \lib\tests\render\light\spot_light.blend ``` Next hit F12 to render this test file. **Location in source** The bug is located in shade_volume.h Line 947. ls.P is passed as a parameter there **Setup** All testing was done in the DEBUG-x64 target in VS. Bug still exists in 7484f274dcdc

Pierre Grimme commented

2022-04-15 18:47:42 +02:00

Added subscriber: @Hugo54x-2

Omar Emara commented

2022-05-11 12:24:05 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-05-11 12:24:05 +02:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Omar Emara commented

2022-05-11 12:24:05 +02:00

I can't replicate this myself. But this seems valid, since in volume_integrate(), the light sample will only be initialized if need_light_sample is true due to short circuit evaluation.
So maybe a developer should look into this.

I can't replicate this myself. But this seems valid, since in `volume_integrate()`, the light sample will only be initialized if `need_light_sample` is true due to short circuit evaluation. So maybe a developer should look into this.

Philipp Oeser removed the

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Regression Tests: Run-Time Check Failure #3 - The variable 'ls' is being used without being initialized. #97365