Files
Nim/compiler
ringabout f66f9f261a fixes #25204; Uninitialized variable usage in resize__system_u... in @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 7c65d9e747)
2025-10-13 09:18:09 +02:00
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Nim Compiler

  • This directory contains the Nim compiler written in Nim.
  • Note that this code has been translated from a bootstrapping version written in Pascal.
  • So the code is not a poster child of good Nim code.

See Internals of the Nim Compiler for more information.