[commit: ghc] ghc-8.0: Fixes #12504: Double-escape paths used to build call to hsc_line (76286af)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : ghc-8.0
Link       : http://ghc.haskell.org/trac/ghc/changeset/76286af5c621f032c4afab1f26b992e8ffa7f84d/ghc

>---------------------------------------------------------------

commit 76286af5c621f032c4afab1f26b992e8ffa7f84d
Author: Richard Cook <rcook at rcook.org>
Date:   Tue Aug 30 17:00:36 2016 -0400

    Fixes #12504: Double-escape paths used to build call to hsc_line
    
    In outHsLine, paths passed to construct invocations of hsc_line must be
    escaped twice in order to generate a properly escaped string literal
    that will end up in the eventual LINE pragma emitted by this code. This
    is especially important on Windows paths, where backslashes would
    otherwise be treated as C escape sequences and result in the incorrect
    Windows paths.
    
    Adds test case to verify that hsc2hs properly escapes file paths in LINE
    pragmas
    
    Updates the hsc2hs submodule.
    
    See https://ghc.haskell.org/trac/ghc/ticket/12504
    
    Reviewers: erikd, hvr, austin, bgamari, Phyx
    
    Reviewed By: erikd, Phyx
    
    Subscribers: thomie, Phyx, mpickering
    
    Differential Revision: https://phabricator.haskell.org/D2478
    
    GHC Trac Issues: #12504
    
    (cherry picked from commit 2ee1db60ab29258fa9f8ab820f778bd0bb7f87a4)


>---------------------------------------------------------------

76286af5c621f032c4afab1f26b992e8ffa7f84d
 testsuite/.gitignore                                          |  1 +
 testsuite/tests/hsc2hs/Makefile                               | 11 +++++++++++
 testsuite/tests/hsc2hs/T12504.stdout                          |  2 ++
 .../{driver/T11429b.hs => hsc2hs/T12504/path/to/T12504.hsc}   |  3 +++
 testsuite/tests/hsc2hs/all.T                                  |  6 ++++++
 utils/hsc2hs                                                  |  2 +-
 6 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/testsuite/.gitignore b/testsuite/.gitignore
index e37a101..2114e6f 100644
--- a/testsuite/.gitignore
+++ b/testsuite/.gitignore
@@ -785,6 +785,7 @@ mk/ghcconfig*_test___spaces_ghc*.exe.mk
 /tests/ghci/scripts/ghci027.hs
 /tests/ghci/should_run/3171.err
 /tests/hsc2hs/3837.hs
+/tests/hsc2hs/T12504/path/to/T12504.hs
 /tests/hsc2hs/T3837.hs
 /tests/hsc2hs/hsc2hs001.hs
 /tests/hsc2hs/hsc2hs002.hs
diff --git a/testsuite/tests/hsc2hs/Makefile b/testsuite/tests/hsc2hs/Makefile
index 54fa5ad..9b3ee98 100644
--- a/testsuite/tests/hsc2hs/Makefile
+++ b/testsuite/tests/hsc2hs/Makefile
@@ -40,3 +40,14 @@ T10272:
 	'$(HSC2HS)' --cross-compile $@.hsc
 	'$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make $@
 	./$@
+
+.PHONY: T12504
+T12504:
+	'$(HSC2HS)' T12504/path/to/$@.hsc
+ifeq "$(WINDOWS)" "YES"
+	grep '{-# LINE 1 \"T12504\\\\path\\\\to\\\\$@\.hsc\" #-}' T12504/path/to/$@.hs
+	grep '{-# LINE 2 \"T12504\\\\path\\\\to\\\\$@\.hsc\" #-}' T12504/path/to/$@.hs
+else
+	grep '{-# LINE 1 \"T12504/path/to/$@\.hsc\" #-}' T12504/path/to/$@.hs
+	grep '{-# LINE 2 \"T12504/path/to/$@\.hsc\" #-}' T12504/path/to/$@.hs
+endif
diff --git a/testsuite/tests/hsc2hs/T12504.stdout b/testsuite/tests/hsc2hs/T12504.stdout
new file mode 100644
index 0000000..c1c05d0
--- /dev/null
+++ b/testsuite/tests/hsc2hs/T12504.stdout
@@ -0,0 +1,2 @@
+{-# LINE 1 "T12504/path/to/T12504.hsc" #-}
+{-# LINE 2 "T12504/path/to/T12504.hsc" #-}
diff --git a/testsuite/tests/driver/T11429b.hs b/testsuite/tests/hsc2hs/T12504/path/to/T12504.hsc
similarity index 61%
copy from testsuite/tests/driver/T11429b.hs
copy to testsuite/tests/hsc2hs/T12504/path/to/T12504.hsc
index c81fb82..3d05ce0 100644
--- a/testsuite/tests/driver/T11429b.hs
+++ b/testsuite/tests/hsc2hs/T12504/path/to/T12504.hsc
@@ -1,2 +1,5 @@
+module Main (main) where
+
 main :: IO ()
 main = putStrLn "hello world"
+
diff --git a/testsuite/tests/hsc2hs/all.T b/testsuite/tests/hsc2hs/all.T
index d4fc69d..3f910db 100644
--- a/testsuite/tests/hsc2hs/all.T
+++ b/testsuite/tests/hsc2hs/all.T
@@ -35,3 +35,9 @@ test('T10272',
      [extra_clean(['T10272.hs', 'T10272_hsc_make.c'])],
      run_command,
      ['$MAKE -s --no-print-directory T10272'])
+
+test('T12504',
+     [extra_clean(['T12504/path/to/T12504.hs']),
+      extra_files(['T12504'])],
+     run_command,
+     ['$MAKE -s --no-print-directory T12504'])
diff --git a/utils/hsc2hs b/utils/hsc2hs
index 5119aeb..f5ae016 160000
--- a/utils/hsc2hs
+++ b/utils/hsc2hs
@@ -1 +1 @@
-Subproject commit 5119aebacaca75d983b4d7db32a6305b7f8651dd
+Subproject commit f5ae016e5a69ebf42d612805e51afd9227df9389