diff options
Diffstat (limited to 'src/libexpr/get-drvs.cc')
| -rw-r--r-- | src/libexpr/get-drvs.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/libexpr/get-drvs.cc b/src/libexpr/get-drvs.cc index 78edbd392d19..b101f2da30d1 100644 --- a/src/libexpr/get-drvs.cc +++ b/src/libexpr/get-drvs.cc @@ -45,6 +45,10 @@ MetaInfo DrvInfo::queryMetaInfo(EvalState & state) const } +/* Cache for already evaluated derivations. Usually putting ATerms in + a STL container is unsafe (they're not scanning for GC roots), but + here it doesn't matter; everything in this set is reachable from + the stack as well. */ typedef set<Expr> Exprs; |