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-rw-r--r--src/interp/clammed.boot6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/interp/clammed.boot b/src/interp/clammed.boot
index 6f874dbe..14c98e85 100644
--- a/src/interp/clammed.boot
+++ b/src/interp/clammed.boot
@@ -120,7 +120,11 @@ isValidType form ==
and/[isValid for x in argl for c in cl] where isValid() ==
categoryForm?(c) =>
evalCategory(x,MSUBSTQ(x,'_$,c)) and isValidType x
- GETDATABASE(opOf x,'CONSTRUCTORKIND) ^= 'domain
+ -- Arguments to constructors are general expressions. Below
+ -- domain constructors are not considered valid arguments (yet).
+ x' := opOf x
+ not atom x' or not IDENTP x' => true -- surely not constructors
+ getConstructorKindFromDB x' ^= "domain"
selectMms1(op,tar,args1,args2,$Coerce) ==
-- for new compiler/old world compatibility, sometimes have to look