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authorGravatar herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7>2008-06-29 14:57:58 +0000
committerGravatar herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7>2008-06-29 14:57:58 +0000
commit2040379ec1d79ff588498ca6f20d8c7b75d74533 (patch)
tree030ab3eebf66961746ba164ca72a821a88d18851 /test-suite/success/CanonicalStructure.v
parent42088723410c0aef9767ee0cd18735eb081f05a6 (diff)
Préférence donnée aux constantes qui ne sont pas des projections
canoniques lors d'une unification constante/constante s'apprêtant à déplier l'une des deux constantes (suggestion des utilisateurs de structures canoniques), ceci afin de préserver des possibilités ultérieures de résolution d'evars par équipement en structure canonique. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11187 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'test-suite/success/CanonicalStructure.v')
-rw-r--r--test-suite/success/CanonicalStructure.v17
1 files changed, 17 insertions, 0 deletions
diff --git a/test-suite/success/CanonicalStructure.v b/test-suite/success/CanonicalStructure.v
index 44d21b83b..b8cae4719 100644
--- a/test-suite/success/CanonicalStructure.v
+++ b/test-suite/success/CanonicalStructure.v
@@ -12,3 +12,20 @@ Record Silly (X : Set) : Set := mkSilly { x : X }.
Definition anotherMk := mkSilly.
Definition struct := anotherMk nat 3.
Canonical Structure struct.
+
+(* Intertwinning canonical structures and delta-expansion *)
+(* Assia's short example *)
+
+Open Scope bool_scope.
+
+Set Implicit Arguments.
+
+Structure test_struct : Type := mk_test {dom :> Type; f : dom -> dom -> bool}.
+
+Notation " x != y":= (f _ x y)(at level 10).
+
+Canonical Structure bool_test := mk_test (fun x y => x || y).
+
+Definition b := bool.
+
+Check (fun x : b => x != x).