fixes #25204; Uninitialized variable usage in resize__system_u... in @psystem.nim.c in ORC #25209
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…@psystem.nim.c in ORC
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Thanks for your hard work on this PR! Hint: mm: orc; opt: speed; options: -d:release |
narimiran
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Oct 13, 2025
…@psystem.nim.c in ORC (#25209) fixes #25204 ```nim of mUnaryMinusI..mAbsI: unaryArithOverflow(p, e, d, op) of mAddI..mPred: binaryArithOverflow(p, e, d, op) ``` Arithmetic operations may raise exceptions. So we cannot entrust the optimizer to skip `result` initialization in this situation, as complained righteously by `gcc` and `clang`: `warning: ‘result’ may be used uninitialized [-Wmaybe-uninitialize]`. With this PR, `clang -c -Wuninitialized -O1 @psystem.nim.c` no longer gives warnings (cherry picked from commit 7c65d9e)
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fixes #25204
Arithmetic operations may raise exceptions. So we cannot entrust the optimizer to skip
resultinitialization in this situation, as complained righteously bygccandclang:warning: ‘result’ may be used uninitialized [-Wmaybe-uninitialize].With this PR,
clang -c -Wuninitialized -O1 @psystem.nim.cno longer gives warnings