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(g77-300.info)Missing Features

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Missing Features
================

   This section lists features we know are missing from `g77', and
which we want to add someday.  (There is no priority implied in the
ordering below.)

GNU Fortran language:

Better Source Model

Fortran 90 Support

Intrinsics in PARAMETER Statements

Arbitrary Concatenation

SELECT CASE on CHARACTER Type

RECURSIVE Keyword

Popular Non-standard Types

Full Support for Compiler Types

Array Bounds Expressions

POINTER Statements

Sensible Non-standard Constructs

READONLY Keyword

FLUSH Statement

Expressions in FORMAT Statements

Explicit Assembler Code

Q Edit Descriptor

GNU Fortran dialects:

Old-style PARAMETER Statements

TYPE and ACCEPT I/O Statements

STRUCTURE UNION RECORD MAP

OPEN CLOSE and INQUIRE Keywords

ENCODE and DECODE

AUTOMATIC Statement

Suppressing Space Padding

Fortran Preprocessor

Bit Operations on Floating-point Data

Really Ugly Character Assignments

New facilities:

POSIX Standard

Floating-point Exception Handling

Nonportable Conversions

Large Automatic Arrays

Support for Threads

Increasing Precision/Range

Enabling Debug Lines

Better diagnostics:

Better Warnings

Gracefully Handle Sensible Bad Code

Non-standard Conversions

Non-standard Intrinsics

Modifying DO Variable

Better Pedantic Compilation

Warn About Implicit Conversions

Invalid Use of Hollerith Constant

Dummy Array Without Dimensioning Dummy

Invalid FORMAT Specifiers

Ambiguous Dialects

Unused Labels

Informational Messages

Run-time facilities:

Uninitialized Variables at Run Time

Portable Unformatted Files

Better List-directed I/O

Default to Console I/O

Debugging:

Labels Visible to Debugger