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Merge pull request #2302 from volth/patch-3

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prim_foldlStrict: call forceValue() before value is copied
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Eelco Dolstra 2018-07-23 09:19:05 +02:00 committed by GitHub
parent 1b34b69b45 e2b114cfe1
commit 925053e974
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1 changed files with 7 additions and 6 deletions
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9
src/libexpr/primops.cc
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@ -1508,19 +1508,20 @@ static void prim_foldlStrict(EvalState & state, const Pos & pos, Value * * args,
state.forceFunction(*args[0], pos); state.forceFunction(*args[0], pos);
state.forceList(*args[2], pos); state.forceList(*args[2], pos);
if (args[2]->listSize()) {
Value * vCur = args[1]; Value * vCur = args[1];
if (args[2]->listSize())
for (unsigned int n = 0; n < args[2]->listSize(); ++n) { for (unsigned int n = 0; n < args[2]->listSize(); ++n) {
Value vTmp; Value vTmp;
state.callFunction(*args[0], *vCur, vTmp, pos); state.callFunction(*args[0], *vCur, vTmp, pos);
vCur = n == args[2]->listSize() - 1 ? &v : state.allocValue(); vCur = n == args[2]->listSize() - 1 ? &v : state.allocValue();
state.callFunction(vTmp, *args[2]->listElems()[n], *vCur, pos); state.callFunction(vTmp, *args[2]->listElems()[n], *vCur, pos);
} }
else
v = *vCur;
state.forceValue(v); state.forceValue(v);
} else {
state.forceValue(*args[1]);
v = *args[1];
}
} }