X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=docs%2Fusers_guide%2Fusing.xml;h=544a6e85d2210ef717e7ae6cd57ee2dd0ee54b7d;hb=536852b1348fde6ec0ba13859cc5ddf8480a1653;hp=88f9e5e60080cc91f75c5b7f99e5b801a043eb4c;hpb=0560e796f1d813582e066a5f2bec2684c71df44d;p=ghc-hetmet.git
diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml
index 88f9e5e..544a6e8 100644
--- a/docs/users_guide/using.xml
+++ b/docs/users_guide/using.xml
@@ -839,7 +839,17 @@ ghc -c Foo.hs
:
- Turns on all warning options.
+ Turns on all warning options that indicate potentially
+ suspicious code. The warnings that are
+ not enabled by
+ are:
+
+
+
+
+
+
+
@@ -905,6 +915,31 @@ ghc -c Foo.hs
+ :
+
+
+ implicit prelude, warning
+ Have the compiler warn if the Prelude is implicitly
+ imported. This happens unless either the Prelude module is
+ explicitly imported with an import ... Prelude ...
+ line, or this implicit import is disabled (either by
+ or a
+ LANGUAGE NoImplicitPrelude pragma).
+
+ Note that no warning is given for syntax that implicitly
+ refers to the Prelude, even if
+ would change whether it refers to the Prelude.
+ For example, no warning is given when
+ 368 means
+ Prelude.fromInteger (368::Prelude.Integer)
+ (where Prelude refers to the actual Prelude module,
+ regardless of the imports of the module being compiled).
+
+ This warning is off by default.
+
+
+
+ :
@@ -1025,7 +1060,7 @@ f foo = foo { x = 6 }
in the inadvertent cyclic definition let x = ... x
... in.
- Consequently, this option does
+ Consequently, this option
will complain about cyclic recursive
definitions.
@@ -1145,7 +1180,7 @@ f "2" = 2
the MR can give rise to unexpected behaviour, so it can be helpful
to have an explicit warning that it is being applied.
- This warning is on by default.
+ This warning is off by default.