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Metrowerks CodeWarrior C/C++ Compiler Release Notes
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Version: 2.4.1 ( __MWERKS__ == 0x2401 )
Date:    12 April 2001
Author:  Andreas Hommel
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(This details changes made since the 2.4 series of tools that were
released as Pro 6.  Also check the Back End and IR Optimizer 
release notes for additional details.)

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New Features in this Version
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*  #pragma warn_ptr_int_conv on | off | reset (default: off)

   This #pragma will generate an error a pointer is converted to an
   integral type that is not big enough to represent all pointer values:

      #pragma warn_ptr_int_conv on
      char *cp;
      char c = (char)cp;

         =>

      Warning : integral type is not large enough to hold pointer

   This was added in 2.4 but it was never documented

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Bugs Fixed in this Version
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*  a class can no longer be derived from an unspecialized class template

*  fixes a spurious "incomplete type" error with nested class array members
   in class templates

*  fixes a spurious "illegal use of abstract base class" error with conversion
   function results that are bound to a reference (WB1-17569)

*  fixes a bug where certain template argument dependent sizeof() expression
   where not accepted
   
*  fixes a bug with static member function templates that are called using
   an '.' or '-> expression (WB1-17060)

*  fixes a bug with member pointer qualifier combination during template
   argument deduction (WB1-17060)

*  fixes a potential crash during the expansion of certain illegal macros
   (WB1-16109)

*  fixes a "bug" where "enum { a = -1, b = 0xFFFFFFFF }" wasn't accepted in
   non ANSI-strict mode

*  fixes a bug in the ANSI C compiler that allowed tentative definitions of
   incomplete data

*  fixes a bug with top-most function parameter cv-qualifiers and type
   deduction (IR0010-0071)

*  fixes a bug with unsigned preprocessor evaluations

*  fixes a ICE bug with function try blocks that have more than one exception
   handler

*  fixes a bug with nested non-standard aligned non-template classes that are
   defined inside a class template (WB1-17315)

*  fixes a bug with specialized inline template functions (WB1-18424)

*  fixes a bug where decl-specifiers are ignored when the type specifier
   is a reference typedef (WB1-18290, WB1-18526)

*  const zero initialized variables can now be used a null pointer constant

*  fixes a bug with static_casts that convert "void *" to a pointer to
   incomplete class type

*  fixes a bug with non-reference argumet "X::operator=(X)" assignment
   operators that are called from a compiler generate default assignment
   operator

*  fixes an ICE bug with nested enums in class templates

*  fixes an ICE bug with default template template arguments

*  fixes a global optimizer bug where it wasn't treating intrinsic function
   calls conservatively enough (WB1-17341)

*  fixes a global optimizer bug where exprX + exprY < exprX was being
   simplified to exprY < 0 (WB1-18158)

*  fixes an ICE bug in the global optimizer when it autovectorized certain
   loops for x86

*  fixes a global optimizer bug with conditional operator regeneration

*  fixes a global optimizer bug where a common subexpression elimination
   followed by a normal arithmetic transformation sometimes resulted in the
   elimination of necessary catch blocks (WB1-18645)

*  fixes a global optimizer bug where sequences of ifs and else ifs that
   contained tests for adjacent integral values were sometimes simplified
   incorrectly (WB1-19165)

*  fixes a crash with illegal source files in the preprocessor (WB1-21094)

*  fixes a bug in the global optimizer's loop unroller, where it was 
   incorrectly deciding that a loop had a computable number of iterations.

*  fixes an ambiguous name lookup bug with template parameters and "using"

*  fixes a bug with compiler generated non-reference assignment operator
   (e.g. X::operator=(X)) calls in default assigmennt operator functions

===============================================================================
Known Bugs and Incompatibilities in this Version
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===============================================================================
New error messages
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Features Previously Added
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Bugs Previously Fixed
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Contacting Metrowerks
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Use the forms found in the Release Notes folder on the CD to submit:

    Technical Support    cw_support@metrowerks.com
    Report Bugs:         cw_bug@metrowerks.com
    Suggestions:         cw_suggestion@metrowerks.com

See the CodeWarrior_on_the_Nets document in the Release Notes folder for
more contact information, including a list of Internet newsgroups,
online services, and factory update sites.

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Metrowerks Corporation