python: validate offset ranges before pointer arithmetic#610
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jmestwa-coder wants to merge 1 commit intogoogle:mainfrom
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python: validate offset ranges before pointer arithmetic#610jmestwa-coder wants to merge 1 commit intogoogle:mainfrom
jmestwa-coder wants to merge 1 commit intogoogle:mainfrom
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Summary
Add range validation in the Python conversion helpers before pointer arithmetic.
What changed
CharLenToBytes()andBytesToCharLen()before creating derived pointersValueErrorfor invalid rangesWhy
This makes invalid caller-supplied offsets fail predictably instead of reaching undefined behavior.
Testing
Added tests in
python/re2_test.pyfor invalid offsets, boundary cases, and unchanged valid behavior.