Add -fkeep-going to make compiler continue despite errors (#15424)

Add a new optional failure handling for upsweep which continues
the compilation on other modules if any of them has errors.

11 files changed, 50 insertions, 0 deletions

diff --git a/testsuite/tests/ghci/prog019/A.hs b/testsuite/tests/ghci/prog019/A.hs
new file mode 100644
index 0000000000..4126fd03c3
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/A.hs
@@ -0,0 +1,8 @@
+-- Test for #15424
+
+module A where
+
+import B
+import C
+import D
+import E
diff --git a/testsuite/tests/ghci/prog019/B.hs b/testsuite/tests/ghci/prog019/B.hs
new file mode 100644
index 0000000000..96a9cd4009
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/B.hs
@@ -0,0 +1,3 @@
+module B where
+
+import B1
diff --git a/testsuite/tests/ghci/prog019/B1.hs b/testsuite/tests/ghci/prog019/B1.hs
new file mode 100644
index 0000000000..093c3b3ab0
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/B1.hs
@@ -0,0 +1,3 @@
+module B1 where
+
+import B2
diff --git a/testsuite/tests/ghci/prog019/B2.hs b/testsuite/tests/ghci/prog019/B2.hs
new file mode 100644
index 0000000000..ad504c35ee
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/B2.hs
@@ -0,0 +1,3 @@
+module B2 where
+
+asdf
diff --git a/testsuite/tests/ghci/prog019/C.hs b/testsuite/tests/ghci/prog019/C.hs
new file mode 100644
index 0000000000..695cb14e18
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/C.hs
@@ -0,0 +1,4 @@
+module C where
+
+foo :: Int
+foo = 1
diff --git a/testsuite/tests/ghci/prog019/D.hs b/testsuite/tests/ghci/prog019/D.hs
new file mode 100644
index 0000000000..4edf1e1f97
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/D.hs
@@ -0,0 +1,3 @@
+module D where
+
+roses are red
diff --git a/testsuite/tests/ghci/prog019/E.hs b/testsuite/tests/ghci/prog019/E.hs
new file mode 100644
index 0000000000..114aeb9831
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/E.hs
@@ -0,0 +1,4 @@
+module E where
+
+bar :: String
+bar = "abc"
diff --git a/testsuite/tests/ghci/prog019/prog019.T b/testsuite/tests/ghci/prog019/prog019.T
new file mode 100644
index 0000000000..e5bc51f6ad
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/prog019.T
@@ -0,0 +1,4 @@
+test('prog019',
+     [extra_hc_opts('-fkeep-going'),
+      extra_files(['A.hs', 'B.hs', 'B1.hs', 'B2.hs', 'C.hs', 'D.hs', 'E.hs'])],
+     ghci_script, ['prog019.script'])
diff --git a/testsuite/tests/ghci/prog019/prog019.script b/testsuite/tests/ghci/prog019/prog019.script
new file mode 100644
index 0000000000..e4fcd34d4a
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/prog019.script
@@ -0,0 +1,4 @@
+:load A
+bar
+:module C
+foo
diff --git a/testsuite/tests/ghci/prog019/prog019.stderr b/testsuite/tests/ghci/prog019/prog019.stderr
new file mode 100644
index 0000000000..b915e3d049
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/prog019.stderr
@@ -0,0 +1,12 @@
+
+B2.hs:3:1: error:
+    Parse error: module header, import declaration
+    or top-level declaration expected.
+-fkeep-going in use, removing the following dependencies and continuing:
+      B1
+      B
+      A
+
+D.hs:3:1: error:
+    Parse error: module header, import declaration
+    or top-level declaration expected.
diff --git a/testsuite/tests/ghci/prog019/prog019.stdout b/testsuite/tests/ghci/prog019/prog019.stdout
new file mode 100644
index 0000000000..64d63622e0
--- /dev/null
+++ b/testsuite/tests/ghci/prog019/prog019.stdout
@@ -0,0 +1,2 @@
+"abc"
+1