October 2003 - Hugs-Bugs

module system problem
by Iavor Diatchki 09 Oct '03

09 Oct '03

hello, there seems to be a bug in the module system implementation: > module Test where > import Prelude hiding (negate) > negate = not > test = negate ERROR "Test.lhs":7 - Ambiguous variable occurrence "negate" *** Could refer to: Test.negate Hugs.Prelude.negate bye iavor -- ================================================== | Iavor S. Diatchki, Ph.D. student | | Department of Computer Science and Engineering | | School of OGI at OHSU | | http://www.cse.ogi.edu/~diatchki | ==================================================

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hugsIsEOF in Mac OS X
by Hamilton Richards 08 Oct '03

08 Oct '03

In Hugs Version: November 2002 running on Mac OS X (10.2), CTRL-D does not result in hugsIsEOF returning True. --Ham -- ------------------------------------------------------------------ Hamilton Richards, PhD Department of Computer Sciences Senior Lecturer The University of Texas at Austin 512-471-9525 1 University Station C0500 Taylor Hall 5.138 Austin, Texas 78712-1188 ham(a)cs.utexas.edu hrichrds(a)swbell.net ------------------------------------------------------------------

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INTERNAL ERROR: parseInput
by Iavor Diatchki 08 Oct '03

08 Oct '03

hello, appologies for the many bug-posts. hugs crahes with an internal error when it encounters an unfinished pattern like this: > test ( INTERNAL ERROR: parseInput bye iavor -- ================================================== | Iavor S. Diatchki, Ph.D. student | | Department of Computer Science and Engineering | | School of OGI at OHSU | | http://www.cse.ogi.edu/~diatchki | ==================================================

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parsing strings
by Iavor Diatchki 08 Oct '03

08 Oct '03

hello, there seems to be a problem when parsing multi-line strings: in the first string there is no space after the \, while in the second there is. i tried this on linux, with the july version of hugs. > probelm = "hello \ > \world" > noproblem = "hello \ > \world" the error i get is: "Illegal character escape sequence "\w" bye iavor -- ================================================== | Iavor S. Diatchki, Ph.D. student | | Department of Computer Science and Engineering | | School of OGI at OHSU | | http://www.cse.ogi.edu/~diatchki | ==================================================

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defining unix
by Iavor Diatchki 03 Oct '03

03 Oct '03

hello, hugs crashes if one tries to define unix: > unix = undefined INTERNAL ERROR: compileGlobalFunction another interesting thing occurs if the following is added: > f = test' unix > test' = undefined then one gets an undefined variable: ERROR "test.lhs":11 - Undefined variable "unix" however this does not seem to happen if the ' is not there bye iavor -- ================================================== | Iavor S. Diatchki, Ph.D. student | | Department of Computer Science and Engineering | | School of OGI at OHSU | | http://www.cse.ogi.edu/~diatchki | ==================================================

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