lix-project/lix
20
55
Fork 31
Code Issues 345 Code Review (Gerrit) Projects 3 Releases Wiki Activity

Don't allocate empty lists

Browse source 
This saves about 4 MB when evaluating a NixOS system configuration.
This commit is contained in:
Eelco Dolstra 2012-08-13 15:02:09 -04:00
parent 3e89ef597c
commit e5c589d271
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
src/libexpr/eval.cc
View file

@ -348,7 +348,7 @@ void EvalState::mkList(Value & v, unsigned int length)
{ {
v.type = tList; v.type = tList;
v.list.length = length; v.list.length = length;
v.list.elems = (Value * *) GC_MALLOC(length * sizeof(Value *)); v.list.elems = length ? (Value * *) GC_MALLOC(length * sizeof(Value *)) : 0;
nrListElems += length; nrListElems += length;
} }