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* In an nested with' where the inner with is a variable (with ...;

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with someVar; ...'), the contents of the variable would be
  clobbered.  (The attributes in the outer `with' were added to the
  variable.)
This commit is contained in:
Eelco Dolstra 2010-04-16 13:44:02 +00:00
parent 04c4bd3624
commit 02c1dac909
3 changed files with 15 additions and 7 deletions
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13
src/libexpr/get-drvs.cc
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@ -177,14 +177,15 @@ static void getDerivations(EvalState & state, Value & vIn,
there are names clashes between derivations, the derivation
bound to the attribute with the "lower" name should take
precedence). */
StringSet attrs;
typedef std::map<string, Symbol> SortedSymbols;
SortedSymbols attrs;
foreach (Bindings::iterator, i, *v.attrs)
attrs.insert(i->first);
attrs.insert(std::pair<string, Symbol>(i->first, i->first));
foreach (StringSet::iterator, i, attrs) {
startNest(nest, lvlDebug, format("evaluating attribute `%1%'") % *i);
string pathPrefix2 = addToPath(pathPrefix, *i);
Value & v2((*v.attrs)[state.symbols.create(*i)]);
foreach (SortedSymbols::iterator, i, attrs) {
startNest(nest, lvlDebug, format("evaluating attribute `%1%'") % i->first);
string pathPrefix2 = addToPath(pathPrefix, i->first);
Value & v2((*v.attrs)[i->second]);
if (combineChannels)
getDerivations(state, v2, pathPrefix2, autoArgs, drvs, done);
else if (getDerivation(state, v2, pathPrefix2, drvs, done)) {