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* Do the path check on the normal form.

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This commit is contained in:
Eelco Dolstra 2006-10-17 10:57:25 +00:00
parent 46b631b6c4
commit 7de5fe2fc2
1 changed files with 5 additions and 2 deletions
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7
src/libexpr/eval.cc
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@ -294,9 +294,11 @@ string coerceToString(EvalState & state, Expr e, PathSet & context,
/* Common implementation of `+', ConcatStrings and `~'. */
static ATerm concatStrings(EvalState & state, const ATermVector & args,
static ATerm concatStrings(EvalState & state, ATermVector & args,
string separator = "")
{
if (args.empty()) return makeStr("", PathSet());
PathSet context;
std::ostringstream s;
@ -305,7 +307,8 @@ static ATerm concatStrings(EvalState & state, const ATermVector & args,
paths are copied when they are used in a derivation), and none
of the strings are allowed to have contexts. */
ATerm dummy;
bool isPath = !args.empty() && matchPath(args.front(), dummy);
args.front() = evalExpr(state, args.front());
bool isPath = matchPath(args.front(), dummy);
for (ATermVector::const_iterator i = args.begin(); i != args.end(); ++i) {
if (i != args.begin()) s << separator;