bugs.texi, [...]: Doc updates from Craig.
* bugs.texi, g77.1, g77.texi, intdoc.in, news.texi: Doc updates
from Craig.
From-SVN: r22152
This commit is contained in:
Craig Burley
Jeff Law
parent
b51e57aa2d
commit
aafb55f640
190
gcc/f/g77.texi
190
gcc/f/g77.texi
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@ -14,7 +14,7 @@
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@c %**start of header
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@setfilename g77.info
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@set last-up-date 1998-08-23
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@set last-up-date 1998-09-01
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@set version-g77 0.5.24
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@set email-general egcs@@cygnus.com
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@set email-bugs egcs-bugs@@cygnus.com
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@ -3310,7 +3310,71 @@ or, if you cannot do that, email
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@email{fortran@@gnu.org} asking for a recent copy of the
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GNU Fortran @file{.plan} file.
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@heading In @code{egcs} 1.1:
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@heading In @code{egcs} 1.1 (versus 0.5.24):
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@itemize @bullet
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@cindex alignment
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@cindex double-precision performance
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@cindex -malign-double
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@item
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Align static double-precision variables and arrays
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on Intel x86 targets
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regardless of whether @samp{-malign-double} is specified.
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Generally, this affects only local variables and arrays
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having the @code{SAVE} attribute
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or given initial values via @code{DATA}.
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@end itemize
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@heading In @code{egcs} 1.1 (versus @code{egcs} 1.0.3):
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@itemize @bullet
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@item
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Support @samp{FORMAT(I<@var{expr}>)} when @var{expr} is a
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compile-time constant @code{INTEGER} expression.
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@item
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Fix @code{g77} @samp{-g} option so procedures that
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use @samp{ENTRY} can be stepped through, line by line,
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in @code{gdb}.
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@item
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Allow any @code{REAL} argument to intrinsics
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@code{Second} and @code{CPU_Time}.
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@item
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Use @code{tempnam}, if available, to open scratch files
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(as in @samp{OPEN(STATUS='SCRATCH')})
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so that the @code{TMPDIR} environment variable,
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if present, is used.
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@item
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@code{g77}'s version of @code{libf2c} separates out
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the setting of global state
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(such as command-line arguments and signal handling)
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from @file{main.o} into distinct, new library
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archive members.
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This should make it easier to write portable applications
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that have their own (non-Fortran) @code{main()} routine
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properly set up the @code{libf2c} environment, even
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when @code{libf2c} (now @code{libg2c}) is a shared library.
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@item
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The @code{g77} command now expects the run-time library
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to be named @code{libg2c.a} instead of @code{libf2c.a},
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to ensure that a version other than the one built and
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installed as part of the same @code{g77} version is picked up.
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@item
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Some diagnostics have been changed from warnings to errors,
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to prevent inadvertent use of the resulting, probably buggy,
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programs.
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These mostly include diagnostics about use of unsupported features
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in the @code{OPEN}, @code{INQUIRE}, @code{READ}, and
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@code{WRITE} statements,
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and about truncations of various sorts of constants.
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@end itemize
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@heading In 0.5.24 and @code{egcs} 1.1 (versus 0.5.23):
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@itemize @bullet
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@item
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@code{g77} now treats @samp{%LOC(@var{expr})} and
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@ -3335,16 +3399,27 @@ when the generated code wants to link to the one
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in @code{libf2c} (@code{libg2c}).
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@item
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The F90 @samp{DATE_AND_TIME} intrinsic now is
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@code{g77} emits more debugging information when
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@samp{-g} is used.
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This new information allows, for example,
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@kbd{which __g77_length_a} to be used in @code{gdb}
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to determine the type of the phantom length argument
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supplied with @samp{CHARACTER} variables.
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This information pertains to internally-generated
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type, variable, and other information,
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not to the longstanding deficiencies vis-a-vis
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@samp{COMMON} and @samp{EQUIVALENCE}.
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@item
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The F90 @samp{Date_and_Time} intrinsic now is
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supported.
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@item
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The F90 @samp{SYSTEM_CLOCK} intrinsic allows
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The F90 @samp{System_Clock} intrinsic allows
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the optional arguments (except for the @samp{Count}
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argument) to be omitted.
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@item
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Upgrade to @code{libf2c} as of 1998-06-18.
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@end itemize
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@heading In 0.5.23:
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@ -3373,7 +3448,7 @@ the options @samp{-fargument-alias}, @samp{-fargument-noalias},
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and @samp{-fargument-noalias-global},
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and the corresponding alias-analysis code.
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(Version 1.0.1 of @code{egcs} has the alias-analysis
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(@code{egcs} has the alias-analysis
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code, but not the @code{__restrict__} keyword.
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@code{egcs} @code{g77} users benefit from the alias-analysis
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code despite the lack of the @code{__restrict__} keyword,
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@ -3385,7 +3460,7 @@ Support for the GNU compiler options
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@samp{-freduce-all-givs},
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and @samp{-frerun-loop-opt}.
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(Version 1.0.1 of @code{egcs} supports these options.
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(@code{egcs} supports these options.
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@code{g77} users of @code{egcs} benefit from them even if
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they are not explicitly specified,
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because the defaults are optimized for @code{g77} users.)
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@ -3443,7 +3518,7 @@ and about truncations of various sorts of constants.
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@heading In 0.5.22:
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@itemize @bullet
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@item
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Fix @code{SIGNAL} intrinsic so it offers portable
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Fix @code{Signal} intrinsic so it offers portable
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support for 64-bit systems (such as Digital Alphas
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running GNU/Linux).
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@ -3466,7 +3541,7 @@ Allow any numeric argument to intrinsics
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@item
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Use @code{tempnam}, if available, to open scratch files
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(as in @samp{OPEN(STATUS='SCRATCH')}
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(as in @samp{OPEN(STATUS='SCRATCH')})
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so that the @code{TMPDIR} environment variable,
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if present, is used.
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@ -3488,6 +3563,61 @@ Fix compiler so it accepts @samp{-fgnu-intrinsics-*} and
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@samp{-fbadu77-intrinsics-*} options.
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@end itemize
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@heading In @code{egcs} 1.0.2 (versus @code{egcs} 1.0.1):
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@itemize @bullet
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@item
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Fix compiler so it accepts @samp{-fgnu-intrinsics-*} and
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@samp{-fbadu77-intrinsics-*} options.
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@end itemize
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@heading In @code{egcs} 1.0 (versus 0.5.21):
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@itemize @bullet
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@item
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Version 1.0 of @code{egcs}
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contains several regressions against
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version 0.5.21 of @code{g77},
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due to using the
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``vanilla'' @code{gcc} back end instead of patching
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it to fix a few bugs and improve performance in a
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few cases.
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@xref{Actual Bugs,,Actual Bugs We Haven't Fixed Yet},
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available in plain-text format in @code{gcc/f/BUGS},
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for information on the known bugs in this version,
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including the regressions.
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Features that have been dropped from this version
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of @code{g77} due to their being implemented
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via @code{g77}-specific patches to the @code{gcc}
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back end in previous releases include:
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@itemize --
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@item
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Support for the C-language @code{restrict} keyword.
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@item
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Support for the @samp{-W} option warning about
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integer division by zero.
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@item
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The Intel x86-specific option @samp{-malign-double}
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applying to stack-allocated data
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as well as statically-allocate data.
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@end itemize
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@cindex -@w{}-driver option
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@cindex g77 options, -@w{}-driver
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@cindex options, -@w{}-driver
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@item
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Remove support for the @samp{--driver} option,
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as @code{g77} now does all the driving,
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just like @code{gcc}.
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@item
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Allow any numeric argument to intrinsics
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@code{Int2} and @code{Int8}.
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@end itemize
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@heading In 0.5.21:
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@itemize @bullet
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@item
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@ -3525,9 +3655,16 @@ to avoid compiler crashes resulting from coding errors
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that these diagnostics normally would identify.
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@item
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Fix @code{libU77} routines that accept file names
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to strip trailing spaces from them, for consistency
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Fix @code{libU77} routines that accept file and other names
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to strip trailing blanks from them, for consistency
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with other implementations.
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Blanks may be forcibly appended to such names by
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appending a single null character (@samp{CHAR(0)})
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to the significant trailing blanks.
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@item
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Fix @code{CHMOD} intrinsic to work with file names
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that have embedded blanks, commas, and so on.
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@item
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Fix @code{SIGNAL} intrinsic so it accepts an
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@ -3555,9 +3692,21 @@ Add @code{INT2} and @code{INT8} intrinsics.
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@item
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Add @code{CPU_TIME} intrinsic.
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@item
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Add @code{ALARM} intrinsic.
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@item
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@code{CTIME} intrinsic now accepts any @code{INTEGER}
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argument, not just @code{INTEGER(KIND=2)}.
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@item
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@code{g77} driver now prints version information (such as produced
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by @kbd{g77 -v}) to @code{stderr} instead of @code{stdout}.
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@item
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The @samp{.r} suffix now designates a Ratfor source file,
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to be preprocessed via the @code{ratfor} command, available
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separately.
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@end itemize
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@heading In 0.5.20:
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@ -3606,7 +3755,7 @@ building it from this and future versions of @code{g77}.
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@item
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Dave Love's implementation of @code{libU77} has been
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added to the version of @code{libf2c} distributed with
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and built by @code{g77}.
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and built as part of @code{g77}.
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@code{g77} now knows about the routines in this library
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as intrinsics.
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@ -3654,8 +3803,8 @@ This type is wide enough
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(holds the same number of bits)
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as the character-pointer type on the machine.
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On most systems, this won't make a noticeable difference,
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whereas on Alphas and other systems with 64-bit pointers,
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On most machines, this won't make a difference,
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whereas, on Alphas and other systems with 64-bit pointers,
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the @code{INTEGER(KIND=0)} type is equivalent to @code{INTEGER(KIND=2)}
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(often referred to as @code{INTEGER*8})
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instead of the more common @code{INTEGER(KIND=1)}
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@ -3731,6 +3880,15 @@ A new group of intrinsics, @samp{gnu}, has been added
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to contain the new @code{REALPART}, @code{IMAGPART},
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and @code{COMPLEX} intrinsics.
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An old group, @samp{dcp}, has been removed.
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@item
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Complain about industry-wide ambiguous references
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@samp{REAL(@var{expr})} and @samp{AIMAG(@var{expr})},
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where @var{expr} is @code{DOUBLE COMPLEX} (or any
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complex type other than @code{COMPLEX}), unless
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@samp{-ff90} option specifies Fortran 90 interpretation
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or new @samp{-fugly-complex} option, in conjunction with
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@samp{-fnot-f90}, specifies @code{f2c} interpretation.
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@end itemize
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@heading In 0.5.19:
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