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authorEelco Dolstra <e.dolstra@tudelft.nl>2007-04-16T15·03+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2007-04-16T15·03+0000
commit5f2492eaecfe8d3451812e894852b1330492e827 (patch)
treeafb46441b5131d6cfddade0be9de64d95ebc2981 /src/libexpr/eval.cc
parent0a8eeea9d8060b9d25891ccc5a9d55e32bf829ba (diff)
* New primop "throw <string>" to throw an error. This is like abort,
  only thrown errors are caught by the top-level derivation evaluation
  in nix-env -qa / -i.

Diffstat (limited to 'src/libexpr/eval.cc')
-rw-r--r--src/libexpr/eval.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 456bc25f3278..552b586250b1 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -616,6 +616,9 @@ static char * deepestStack = (char *) -1; /* for measuring stack usage */
 
 Expr evalExpr2(EvalState & state, Expr e)
 {
+    /* When changing this function, make sure that you don't cause a
+       (large) increase in stack consumption! */
+    
     char x;
     if (&x < deepestStack) deepestStack = &x;