PartialDownsweep is sensitive to form of C compiler error messages
One of the things tested by the PartialDownsweep
test is that a CPP preprocessor error fails as expected. However, this will cause the C preprocessor to emit an error to stderr. In general we have little control over the preprocessor; this environment sensitivity causes this test to fail on Windows, where cpp
emits caret diagnostics:
--- ghc-api/downsweep/PartialDownsweep.run/PartialDownsweep.stderr.normalised 2019-11-07 13:07:07.259955900 +0000
+++ ghc-api/downsweep/PartialDownsweep.run/PartialDownsweep.run.stderr.normalised 2019-11-07 13:07:07.263867400 +0000
@@ -5,12 +5,12 @@
B.hs:2:0:
#elif without #if
- #elif <- cpp error here
-
+ 2 | #elif <- cpp error here
+ |
== CPP preprocessor error with bypass
B.hs:2:0:
#elif without #if
- #elif <- cpp error here
-
+ 2 | #elif <- cpp error here
+ |