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Merge pull request #9399 from edolstra/revert-vlas

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Revert use of boost::container::small_vector in the evaluator

(cherry picked from commit 6832d18ac734f4b855f97c07b158491dd01cefcd)
Change-Id: I7f10af0c8b8a8beb4b1e36424120995f4ed82738
This commit is contained in:
eldritch horrors 2024-03-04 05:57:04 +01:00
parent 3f3badffc9
commit 439f88b7d7
2 changed files with 9 additions and 9 deletions
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11
src/libexpr/eval.cc
View file

@ -28,7 +28,6 @@
#include <sys/resource.h> #include <sys/resource.h>
#include <nlohmann/json.hpp> #include <nlohmann/json.hpp>
#include <boost/container/small_vector.hpp>
#if HAVE_BOEHMGC #if HAVE_BOEHMGC
@ -1702,7 +1701,7 @@ void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value &
/* We have all the arguments, so call the primop with /* We have all the arguments, so call the primop with
the previous and new arguments. */ the previous and new arguments. */
Value * vArgs[maxPrimOpArity]; Value * vArgs[arity];
auto n = argsDone; auto n = argsDone;
for (Value * arg = &vCur; arg->isPrimOpApp(); arg = arg->primOpApp.left) for (Value * arg = &vCur; arg->isPrimOpApp(); arg = arg->primOpApp.left)
vArgs[--n] = arg->primOpApp.right; vArgs[--n] = arg->primOpApp.right;
@ -1765,11 +1764,11 @@ void ExprCall::eval(EvalState & state, Env & env, Value & v)
// 4: about 60 // 4: about 60
// 5: under 10 // 5: under 10
// This excluded attrset lambdas (`{...}:`). Contributions of mixed lambdas appears insignificant at ~150 total. // This excluded attrset lambdas (`{...}:`). Contributions of mixed lambdas appears insignificant at ~150 total.
boost::container::small_vector<Value *, 4> vArgs(args.size()); Value * vArgs[args.size()];
for (size_t i = 0; i < args.size(); ++i) for (size_t i = 0; i < args.size(); ++i)
vArgs[i] = args[i]->maybeThunk(state, env); vArgs[i] = args[i]->maybeThunk(state, env);
state.callFunction(vFun, args.size(), vArgs.data(), v, pos); state.callFunction(vFun, args.size(), vArgs, v, pos);
} }
@ -2008,8 +2007,8 @@ void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
return result; return result;
}; };
boost::container::small_vector<Value, conservativeStackReservation> values(es->size()); Value values[es->size()];
Value * vTmpP = values.data(); Value * vTmpP = values;
for (auto & [i_pos, i] : *es) { for (auto & [i_pos, i] : *es) {
Value & vTmp = *vTmpP++; Value & vTmp = *vTmpP++;

7
src/libexpr/primops.cc
View file

@ -2726,7 +2726,7 @@ static void prim_catAttrs(EvalState & state, const PosIdx pos, Value * * args, V
auto attrName = state.symbols.create(state.forceStringNoCtx(*args[0], pos, "while evaluating the first argument passed to builtins.catAttrs")); auto attrName = state.symbols.create(state.forceStringNoCtx(*args[0], pos, "while evaluating the first argument passed to builtins.catAttrs"));
state.forceList(*args[1], pos, "while evaluating the second argument passed to builtins.catAttrs"); state.forceList(*args[1], pos, "while evaluating the second argument passed to builtins.catAttrs");
boost::container::small_vector<Value *, nonRecursiveStackReservation> res(args[1]->listSize()); Value * res[args[1]->listSize()];
size_t found = 0; size_t found = 0;
for (auto v2 : args[1]->listItems()) { for (auto v2 : args[1]->listItems()) {
@ -3061,7 +3061,8 @@ static void prim_filter(EvalState & state, const PosIdx pos, Value * * args, Val
state.forceFunction(*args[0], pos, "while evaluating the first argument passed to builtins.filter"); state.forceFunction(*args[0], pos, "while evaluating the first argument passed to builtins.filter");
boost::container::small_vector<Value *, nonRecursiveStackReservation> vs(args[1]->listSize()); // FIXME: putting this on the stack is risky.
Value * vs[args[1]->listSize()];
size_t k = 0; size_t k = 0;
bool same = true; bool same = true;
@ -3450,7 +3451,7 @@ static void prim_concatMap(EvalState & state, const PosIdx pos, Value * * args,
state.forceList(*args[1], pos, "while evaluating the second argument passed to builtins.concatMap"); state.forceList(*args[1], pos, "while evaluating the second argument passed to builtins.concatMap");
auto nrLists = args[1]->listSize(); auto nrLists = args[1]->listSize();
boost::container::small_vector<Value, conservativeStackReservation> lists(nrLists); Value lists[nrLists];
size_t len = 0; size_t len = 0;
for (unsigned int n = 0; n < nrLists; ++n) { for (unsigned int n = 0; n < nrLists; ++n) {