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-rw-r--r--libbuild2/file.cxx5
1 files changed, 3 insertions, 2 deletions
diff --git a/libbuild2/file.cxx b/libbuild2/file.cxx
index 18147a2..7491ca6 100644
--- a/libbuild2/file.cxx
+++ b/libbuild2/file.cxx
@@ -759,8 +759,9 @@ namespace build2
{
if (!altn)
altn = s.root_extra->altn;
- else
- assert (*altn == s.root_extra->altn);
+ else if (*altn != s.root_extra->altn)
+ fail << "build file/directory naming schemes for " << out_root
+ << " and " << s.src_path () << " does not match";
if (s.root_extra->project)
{