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Test Plan: validate

Reviewers: austin, bgamari, simonmar, mpickering

Reviewed By: mpickering

Subscribers: mpickering, rwbarton, thomie

GHC Trac Issues: #12610

Differential Revision: https://phabricator.haskell.org/D3584

Changes in a few different places to catch several different
types of error related to RecursiveDo
Signed-off-by: Rupert Horlick <ruperthorlick@gmail.com>

Test Plan: Three test cases, with further tests in comments

Reviewers: austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D3271

This corrects the line numbers for literate code after a shebang.
Fixes #13414.

Test Plan: validate

Reviewers: austin, bgamari, trofi

Reviewed By: bgamari, trofi

Subscribers: trofi, rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3333

Signed-off-by: Rupert Horlick <ruperthorlick@gmail.com>

Reviewers: austin, bgamari

Reviewed By: bgamari

Subscribers: rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3286

Added a check for whether RankNTypes is enabled
and changed error message accordingly

Reviewers: austin, bgamari

Reviewed By: bgamari

Subscribers: thomie, mpickering

Differential Revision: https://phabricator.haskell.org/D3262

Reviewers: austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D3261

A minor parser issue, allowing a mal-formed data constructor
through.

Refactoring only. Cleanup some loose ends from #10196.

Initially the idea was to only allow modifier letters at the end of
identifiers. Since we later decided to allow modifier letters also in
the middle of identifiers (because not doing so would not fix the
regression completely), the names `suffix` and `okIdSuffixChar` don't
seem appropriate anymore.

Remove TODO. Move test from should_fail to should_compile.

Since we're not consisently keeping track of which tests should pass
with which compiler versions, there is no point in keeping these
functions.

Update submodules containers, hpc and stm.

Suggest enabling PatternSynonyms if we find an invalid
signature that looks like a pattern synonym.

Reviewed By: austin, thomie

Differential Revision: https://phabricator.haskell.org/D1347

Among doing other things, Phab:D201 (bc2289e1)
tried to improve the error messages thrown by the parser. For example a missing
else clause now prints "parse error in if statement: else clause empty" instead
of "parse error (possibly incorrect indentation or mismatched brackets)".

Some error messages got much worse however (see tests), and the result seems to
be a net negative. Although not entirely satisfactory, this commits therefore
reverts those parser changes.

Reviewed By: austin

Differential Revision: https://phabricator.haskell.org/D1309

GHC Trac Issues: #10498

Easy fix in the parser to stop regressions, due to Unicode 7.0 changing
the classification of some prior code points.
Signed-off-by: Austin Seipp <austin@well-typed.com>

Test Plan: `tests/parser/should_compile/T10196.hs`

Reviewers: hvr, austin, bgamari

Reviewed By: austin, bgamari

Subscribers: thomie, bgamari

Differential Revision: https://phabricator.haskell.org/D969

GHC Trac Issues: #10196

And rename timeout_multiplier to run_timeout_multiplier.

timeout_multiplier was added in commit
a0038979. The name suggested that it
would affect any test, but it actually only affected tests that had a
run component, and only that run component (as needed by test T367).

Differential Revision: https://phabricator.haskell.org/D982

This makes it easier to grep for expect_fail in the tests directory.

Differential Revision: https://phabricator.haskell.org/D964

Version numbers are not allowed in the package name of a
package-qualified import.

Reviewed By: austin, ezyang

Differential Revision: https://phabricator.haskell.org/D755

Haskell2010 supports

- base-10 (prefix-less),
- base-8 (via `0[oO]`-prefix), and
- base-16 (via `0[xX]`-prefix) integer literals.

This commit adds syntax support for base-2 integer literals via the new `0[bB]`
prefix. The use of a `0b` prefix for indicating binary literals is known
from popular programming languages such as C++14, Perl, Python, Ruby, and Java.

This syntax extension is disabled by default and can be enabled via the
new `{-# LANGUAGE BinaryLiterals #-}` pragma and/or the new `-XBinaryLiterals`

This new extensions requires to upgrade the `ExtsBitmap` type from
`Word` to `Word64` as this adds a 33th flag which is not guaranteed to
fit into a `Word`.
Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

Differential Revision: https://phabricator.haskell.org/D22

Signed-off-by: Austin Seipp <aseipp@pobox.com>