[GHC] #13256: Warn on out-of-range literals in pattern matches too
#13256: Warn on out-of-range literals in pattern matches too -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 8.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- We have these nice warnings for numeric literal expressions that are out of range of their type: {{{ Prelude> 100000000000000000000000000000000 :: Int <interactive>:1:1: warning: [-Woverflowed-literals] Literal 100000000000000000000000000000000 is out of the Int range -9223372036854775808..9223372036854775807 }}} but nothing for numeric patterns: {{{ Prelude> (\x -> case (x :: Int) of 100000000000000000000000000000000 -> 0) 8 :: Int <interactive>:3:8: warning: [-Wincomplete-patterns] Pattern match(es) are non-exhaustive In a case alternative: Patterns not matched: p where p is not one of {100000000000000000000000000000000} *** Exception: <interactive>:3:8-64: Non-exhaustive patterns in case }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13256 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#13256: Warn on out-of-range literals in pattern matches too -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: (none) Type: feature request | Status: patch Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D5181 Wiki Page: | -------------------------------------+------------------------------------- Changes (by harpocrates): * status: new => patch * differential: => Phab:D5181 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13256#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#13256: Warn on out-of-range literals in pattern matches too
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Reporter: rwbarton | Owner: (none)
Type: feature request | Status: patch
Priority: normal | Milestone:
Component: Compiler | Version: 8.1
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s): Phab:D5181
Wiki Page: |
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Comment (by Ryan Scott
#13256: Warn on out-of-range literals in pattern matches too -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: (none) Type: feature request | Status: closed Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | warnings/should_compile/T13256 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D5181 Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * status: patch => closed * testcase: => warnings/should_compile/T13256 * resolution: => fixed * milestone: => 8.8.1 Comment: harpocrates, do you mind updating wiki:Migration/8.8 with a section about these changes? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13256#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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