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libexpr: shrink ExprWith by 8 bytes

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Correct bound on prevWith

Co-authored-by: John Ericson <git@JohnEricson.me>
This commit is contained in:
Taeer Bar-Yam 2025-10-31 21:52:10 +01:00 • committed by Taeer Bar-Yam
parent 2d83bc6b83
commit 11e19ee690
2 changed files with 2 additions and 1 deletions
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2
src/libexpr/include/nix/expr/nixexpr.hh
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@ -637,8 +637,8 @@ struct ExprLet : Expr
struct ExprWith : Expr
{
PosIdx pos;
uint32_t prevWith;
Expr *attrs, *body;
size_t prevWith;
ExprWith * parentWith;
ExprWith(const PosIdx & pos, Expr * attrs, Expr * body)
: pos(pos)

1
src/libexpr/nixexpr.cc
View file

@ -523,6 +523,7 @@ void ExprWith::bindVars(EvalState & es, const std::shared_ptr<const StaticEnv> &
prevWith = 0;
for (curEnv = env.get(), level = 1; curEnv; curEnv = curEnv->up.get(), level++)
if (curEnv->isWith) {
assert(level <= std::numeric_limits<uint32_t>::max());
prevWith = level;
break;
}