STM32CubeIDE 1.18.0 live expressions stopped working completely

[nico23]

Before the STM32CubeIDE had serious issues with the live expressions during debug, with variables showing random values and signs when they were unsigned (the issues are various years old now https://community.st.com/t5/stm32cubeide-mcus/stm32cubeide-1-18-0-released/m-p/778624#M34678)

After updating to STM32CubeIDE Version: 1.18.0 Build: 24413_20250227_1633 (UTC) the live expressions completely broke

All the variables now show 0 and they won't vary

As you can see from the screenshot, hovering while on breakpoint shows the correct value. On the top right, all the values are 0 in the live expressions tab

That's pretty bad considering, trying to migrate to VSCode for being able to debug, gives another sort of issue, acknowledge by ST itself https://community.st.com/t5/stm32-vscode-extension-mcus/stm32-vs-code-extension-no-compiler-found-in-cache-file/m-p/781619#M640

What happened to this company lately...? All these bugs had been unusual back in '19/'20

[Souhaib MAZHOUD]

Hello
Could you please provide additional information (MCU, OS version) in order to further investigate the issue?

KR,

Souhaib

[nico23]

I'm using Windows 10 22H2, 10.0.19045 Build 19045 on the STM32F091VB

[Souhaib MAZHOUD]

Hello @nico23 

I am unable to reproduce the issue on my side. Could you try these suggestions below and check if the issue persists?
- Update the firmware version of ST-Link.

- Disable optimization during debugging by compiling with -OO

- Debug with OpenOCD if you are using a GDB server.

[nico23 · Accepted solution]

The issue seemed to be the GDB server.

Switching to OpenOCD has made the live viewer during debug work correctly