#15068: Small number of test case failures on Ubuntu Bionic (GCC 7.3) -------------------------------------+------------------------------------- Reporter: jrp | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.6.1 Component: Compiler | Version: 8.4.1 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 | (amd64) Type of failure: Incorrect result | Test Case: T13658 at runtime | T14779a T14779b T14868 debug | parsing001 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by int-e): I think this is a bug/misfeature in GNU as: https://sourceware.org/bugzilla/show_bug.cgi?id=23040 (apparently, "." is evaluated wrt. the destination of the .uleb128 directive, which is .note .GNU-stack) In any case, as a workaround, one can evaluate the expression before using it: {{{ uleb128_value = 1f-.-1 .uleb128 = uleb128_value ;instead of ; .uleb128 1f-.-1 }}} The name can be reused. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15068#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler