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authorAdam Gundry <adam@well-typed.com>2023-01-11 21:29:10 +0000
committerMarge Bot <ben+marge-bot@smart-cactus.org>2023-01-18 14:22:26 -0500
commitab0d5cdaa5505e5b774b04b9f68dcbbc7ce1071e (patch)
tree82fbe598799082839feab9558775b6f08675688d /docs
parent5389681edbcab4009c41761221943b05ad1004b7 (diff)
downloadhaskell-ab0d5cdaa5505e5b774b04b9f68dcbbc7ce1071e.tar.gz
Move documentation of deferred type error flags out of warnings section
Diffstat (limited to 'docs')
-rw-r--r--docs/users_guide/exts/defer_type_errors.rst60
-rw-r--r--docs/users_guide/using-warnings.rst65
2 files changed, 63 insertions, 62 deletions
diff --git a/docs/users_guide/exts/defer_type_errors.rst b/docs/users_guide/exts/defer_type_errors.rst
index a2647fc9ef..e2fda98e04 100644
--- a/docs/users_guide/exts/defer_type_errors.rst
+++ b/docs/users_guide/exts/defer_type_errors.rst
@@ -34,7 +34,7 @@ to suppress these warnings.
This flag implies the :ghc-flag:`-fdefer-typed-holes` and
:ghc-flag:`-fdefer-out-of-scope-variables` flags, which enables this behaviour
-for `typed holes <#typed-holes>`__ and variables. Should you so wish, it is
+for :ref:`typed-holes` and variables. Should you so wish, it is
possible to enable :ghc-flag:`-fdefer-type-errors` without enabling
:ghc-flag:`-fdefer-typed-holes` or :ghc-flag:`-fdefer-out-of-scope-variables`,
by explicitly specifying :ghc-flag:`-fno-defer-typed-holes
@@ -42,6 +42,64 @@ by explicitly specifying :ghc-flag:`-fno-defer-typed-holes
<-fdefer-out-of-scope-variables>` on the command-line after the
:ghc-flag:`-fdefer-type-errors` flag.
+.. ghc-flag:: -fdefer-type-errors
+ :shortdesc: Turn type errors into warnings, :ref:`deferring the error until
+ runtime <defer-type-errors>`. Implies
+ :ghc-flag:`-fdefer-typed-holes` and
+ :ghc-flag:`-fdefer-out-of-scope-variables`.
+ See also :ghc-flag:`-Wdeferred-type-errors`.
+ :type: dynamic
+ :reverse: -fno-defer-type-errors
+ :category:
+
+ :since: 7.6
+
+ :implies: :ghc-flag:`-fdefer-typed-holes`, :ghc-flag:`-fdefer-out-of-scope-variables`
+
+ Defer as many type errors as possible until runtime. At compile time
+ you get a warning (instead of an error). At runtime, if you use a
+ value that depends on a type error, you get a runtime error; but you
+ can run any type-correct parts of your code just fine.
+ See also :ghc-flag:`-Wdeferred-type-errors`.
+
+.. ghc-flag:: -fdefer-typed-holes
+ :shortdesc: Convert :ref:`typed hole <typed-holes>` errors into warnings,
+ :ref:`deferring the error until runtime <defer-type-errors>`.
+ Implied by :ghc-flag:`-fdefer-type-errors`.
+ See also :ghc-flag:`-Wtyped-holes`.
+ :type: dynamic
+ :reverse: -fno-defer-typed-holes
+ :category:
+
+ :since: 7.10
+
+ Defer typed holes errors (errors about names with a leading underscore
+ (e.g., “_”, “_foo”, “_bar”)) until runtime. This will turn the errors
+ produced by :ref:`typed holes <typed-holes>` into warnings. Using a value
+ that depends on a typed hole produces a runtime error, the same as
+ :ghc-flag:`-fdefer-type-errors` (which implies this option). See :ref:`typed-holes`.
+
+ Implied by :ghc-flag:`-fdefer-type-errors`. See also :ghc-flag:`-Wtyped-holes`.
+
+.. ghc-flag:: -fdefer-out-of-scope-variables
+ :shortdesc: Convert variable out of scope variables errors into warnings.
+ Implied by :ghc-flag:`-fdefer-type-errors`.
+ See also :ghc-flag:`-Wdeferred-out-of-scope-variables`.
+ :type: dynamic
+ :reverse: -fno-defer-out-of-scope-variables
+ :category:
+
+ :since: 8.0
+
+ Defer variable out-of-scope errors (errors about names without a leading underscore)
+ until runtime. This will turn variable-out-of-scope errors into warnings.
+ Using a value that depends on an out-of-scope variable produces a runtime error,
+ the same as :ghc-flag:`-fdefer-type-errors` (which implies this option).
+ See :ref:`typed-holes`.
+
+ Implied by :ghc-flag:`-fdefer-type-errors`. See also :ghc-flag:`-Wdeferred-out-of-scope-variables`.
+
+
At runtime, whenever a term containing a type error would need to be
evaluated, the error is converted into a runtime exception of type
``TypeError``. Note that type errors are deferred as much as possible
diff --git a/docs/users_guide/using-warnings.rst b/docs/users_guide/using-warnings.rst
index ba3ce858fc..ba4bc44c15 100644
--- a/docs/users_guide/using-warnings.rst
+++ b/docs/users_guide/using-warnings.rst
@@ -343,7 +343,7 @@ of ``-W(no-)*``.
Determines whether the compiler reports typed holes warnings. Has no
effect unless typed holes errors are deferred until runtime. See
- :ref:`typed-holes` and :ref:`defer-type-errors`
+ :ref:`typed-holes` and :ref:`defer-type-errors`.
.. ghc-flag:: -Wdeferred-type-errors
:shortdesc: Report warnings when :ref:`deferred type errors
@@ -353,70 +353,12 @@ of ``-W(no-)*``.
:reverse: -Wno-deferred-type-errors
:category:
- :since: 8.4
+ :since: 8.0
:default: on
Causes a warning to be reported when a type error is deferred until
- runtime. See :ref:`defer-type-errors`
-
-.. ghc-flag:: -fdefer-type-errors
- :shortdesc: Turn type errors into warnings, :ref:`deferring the error until
- runtime <defer-type-errors>`. Implies
- :ghc-flag:`-fdefer-typed-holes` and
- :ghc-flag:`-fdefer-out-of-scope-variables`.
- See also :ghc-flag:`-Wdeferred-type-errors`
- :type: dynamic
- :reverse: -fno-defer-type-errors
- :category:
-
- :since: 7.6
-
- :implies: :ghc-flag:`-fdefer-typed-holes`, :ghc-flag:`-fdefer-out-of-scope-variables`
-
- Defer as many type errors as possible until runtime. At compile time
- you get a warning (instead of an error). At runtime, if you use a
- value that depends on a type error, you get a runtime error; but you
- can run any type-correct parts of your code just fine. See
- :ref:`defer-type-errors`
-
-.. ghc-flag:: -fdefer-typed-holes
- :shortdesc: Convert :ref:`typed hole <typed-holes>` errors into warnings,
- :ref:`deferring the error until runtime <defer-type-errors>`.
- Implied by :ghc-flag:`-fdefer-type-errors`.
- See also :ghc-flag:`-Wtyped-holes`.
- :type: dynamic
- :reverse: -fno-defer-typed-holes
- :category:
-
- :since: 7.10
-
- Defer typed holes errors (errors about names with a leading underscore
- (e.g., “_”, “_foo”, “_bar”)) until runtime. This will turn the errors
- produced by :ref:`typed holes <typed-holes>` into warnings. Using a value
- that depends on a typed hole produces a runtime error, the same as
- :ghc-flag:`-fdefer-type-errors` (which implies this option). See :ref:`typed-holes`
- and :ref:`defer-type-errors`.
-
- Implied by :ghc-flag:`-fdefer-type-errors`. See also :ghc-flag:`-Wtyped-holes`.
-
-.. ghc-flag:: -fdefer-out-of-scope-variables
- :shortdesc: Convert variable out of scope variables errors into warnings.
- Implied by :ghc-flag:`-fdefer-type-errors`.
- See also :ghc-flag:`-Wdeferred-out-of-scope-variables`.
- :type: dynamic
- :reverse: -fno-defer-out-of-scope-variables
- :category:
-
- :since: 8.0
-
- Defer variable out-of-scope errors (errors about names without a leading underscore)
- until runtime. This will turn variable-out-of-scope errors into warnings.
- Using a value that depends on an out-of-scope variable produces a runtime error,
- the same as :ghc-flag:`-fdefer-type-errors` (which implies this option).
- See :ref:`typed-holes` and :ref:`defer-type-errors`.
-
- Implied by :ghc-flag:`-fdefer-type-errors`. See also :ghc-flag:`-Wdeferred-out-of-scope-variables`.
+ runtime. See :ref:`defer-type-errors`.
.. ghc-flag:: -Wdeferred-out-of-scope-variables
:shortdesc: Report warnings when variable out-of-scope errors are
@@ -429,6 +371,7 @@ of ``-W(no-)*``.
:since: 8.0
Warn when a deferred out-of-scope variable is encountered.
+ See :ref:`defer-type-errors`.
.. ghc-flag:: -Wpartial-type-signatures
:shortdesc: warn about holes in partial type signatures when