CxxUtils: Avoid thread_local during fast stack dump.

Accessing a thread_local variable may result in a call to malloc. Avoid using thread_local in code that runs as part of the fast stack dump, so that the dump will work even if the heap is corrupt.

See ATR-22583.

This merge request affects 1 package:

• Control/CxxUtils

This merge request affects 2 files:

• Control/CxxUtils/CxxUtils/SealSignal.h
• Control/CxxUtils/Root/SealSignal.cxx

Adding @ssnyder ,@rbianchi as watchers

added Core master review-pending-level-1 labels

CI Result FAILURE (hash d523cdcc)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 35439]

Hi,

the CI failure is unrelated. Approving.

Cheers, Volker (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 1e210767

added sweep:ignore label