In languages which don’t initialize values, this needs to be explicitly done in order to avoid capturing what random bytes are in memory when run.
An example taken from coreboot:
The code used to write a data structure directly without initializing all its fields. The fix was pretty simple once identified:
Usage of instrumentation tools able to detect such cases like Valgrind should help identifying such problems.
Achieve deterministic builds
- Variations in the build environment
- Deterministic build systems
- Volatile inputs can disappear
- Stable order for inputs
- Value initialization
- Version information
- Archive metadata
- Stable order for outputs
- Build path
- System images
Define a build environment
- What's in a build environment?
- Recording the build environment
- Definition strategies
- Proprietary operating systems
Distribute the environment
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