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From-SVN: r27178
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Craig Burley 1999-05-26 08:55:46 -04:00
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commit 5685ba9013
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10
gcc/f/BUGS
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@ -2,7 +2,7 @@
`bugs0.texi' and `bugs.texi'. `BUGS' is *not* a source file, although
it is normally included within source distributions.
This file lists known bugs in the EGCS-1.2 version of the GNU
This file lists known bugs in the FSF-0.5.25 version of the GNU
Fortran compiler. Copyright (C) 1995-1999 Free Software Foundation,
Inc. You may copy, distribute, and modify it freely as long as you
preserve this copyright notice and permission notice.
@ -11,9 +11,9 @@ Known Bugs In GNU Fortran
*************************
This section identifies bugs that `g77' *users* might run into in
the EGCS-1.2 version of `g77'. This includes bugs that are actually in
the `gcc' back end (GBE) or in `libf2c', because those sets of code are
at least somewhat under the control of (and necessarily intertwined
the FSF-0.5.25 version of `g77'. This includes bugs that are actually
in the `gcc' back end (GBE) or in `libf2c', because those sets of code
are at least somewhat under the control of (and necessarily intertwined
with) `g77', so it isn't worth separating them out.
For information on bugs in *other* versions of `g77', see
@ -27,7 +27,7 @@ particularly concentrated on any version of this information that is
distributed as part of a *released* `g77'.
In particular, while this information is intended to apply to the
EGCS-1.2 version of `g77', only an official *release* of that version
FSF-0.5.25 version of `g77', only an official *release* of that version
is expected to contain documentation that is most consistent with the
`g77' product in that version.

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gcc/f/INSTALL
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156
gcc/f/NEWS
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@ -2,7 +2,7 @@
`news0.texi' and `news.texi'. `NEWS' is *not* a source file, although
it is normally included within source distributions.
This file lists news about the EGCS-1.2 version (and some other
This file lists news about the FSF-0.5.25 version (and some other
versions) of the GNU Fortran compiler. Copyright (C) 1995-1999 Free
Software Foundation, Inc. You may copy, distribute, and modify it
freely as long as you preserve this copyright notice and permission
@ -50,7 +50,7 @@ particularly concentrated on any version of this information that is
distributed as part of a *released* `g77'.
In particular, while this information is intended to apply to the
EGCS-1.2 version of `g77', only an official *release* of that version
FSF-0.5.25 version of `g77', only an official *release* of that version
is expected to contain documentation that is most consistent with the
`g77' product in that version.
@ -66,10 +66,10 @@ about previous `g77' versions up-to-date.
the mainline, development version of `g77' within `egcs') is available
at `http://egcs.cygnus.com/onlinedocs/g77_news.html'.
The following information was last updated on 1999-05-13:
The following information was last updated on 1999-05-26:
In `egcs' 1.2 (versus 1.1.2):
=============================
In 0.5.25 (`EGCS' 1.2) versus `EGCS' 1.1.2:
===========================================
1. `g77' no longer generates bad code for assignments, or other
conversions, of `REAL' or `COMPLEX' constant expressions to type
@ -102,15 +102,9 @@ In `egcs' 1.2 (versus 1.1.2):
7. The `-ax' option is now obeyed when compiling Fortran programs.
(It is passed to the `f771' driver.)
* The new `-fsubscript-check' option causes `g77' to compile
run-time bounds checks of array subscripts, as well as of
substring start and end points.
The current implementation uses the `libf2c' library routine
`s_rnge' to print the diagnostic. Since a future version of `g77'
might use a different implementation, use the new
`-ff2c-subscript-check' option if your application requires use of
`s_rnge' or a compile-time diagnostic.
* The new `-fbounds-check' option causes `g77' to compile run-time
bounds checks of array subscripts, as well as of substring start
and end points.
* Source file names with the suffixes `.FOR' and `.FPP' now are
recognized by `g77' as if they ended in `.for' and `.fpp',
@ -123,10 +117,10 @@ In `egcs' 1.2 (versus 1.1.2):
consistent with the other subroutine forms of `libU77' intrinsics.
* `g77' now warns about a reference to an intrinsic that has an
interface that is not Year 2000 (Y2K) compliant. Also, the
`libg2c' has been changed to increase the likelihood of catching
references to the implementations of these intrinsics using the
`EXTERNAL' mechanism (which would avoid the new warnings).
interface that is not Year 2000 (Y2K) compliant. Also, `libg2c'
has been changed to increase the likelihood of catching references
to the implementations of these intrinsics using the `EXTERNAL'
mechanism (which would avoid the new warnings).
8. `g77' now warns about a reference to a function when the
corresponding *subsequent* function program unit disagrees with
@ -143,15 +137,19 @@ In `egcs' 1.2 (versus 1.1.2):
local double-precision variables that are not in `EQUIVALENCE'
areas and not `SAVE''d.
10. `g77' now open-codes ("inlines") division of `COMPLEX' operands
instead of generating a run-time call to the `libf2c' routines
`c_div' or `z_div', unless the `-Os' option is specified.
* `g77' no longer generates code to maintain `errno', a C-language
concept, when performing operations such as the `SqRt' intrinsic.
10. `g77' developers can temporarily use the `-fflatten-arrays' option
11. `g77' developers can temporarily use the `-fflatten-arrays' option
to compare how the compiler handles code generation using C-like
constructs as compared to the Fortran-like method constructs
normally used.
11. A substantial portion of the `g77' front end's code-generation
12. A substantial portion of the `g77' front end's code-generation
component was rewritten. It now generates code using facilities
more robustly supported by the `gcc' back end. One effect of this
rewrite is that some codes no longer produce a spurious "label LAB
@ -159,14 +157,35 @@ In `egcs' 1.2 (versus 1.1.2):
* Support for the `-fugly' option has been removed.
12. Improve documentation and indexing, including information on Year
13. Improve documentation and indexing, including information on Year
2000 (Y2K) compliance, and providing more information on internals
of the front end.
13. Upgrade to `libf2c' as of 1999-05-10.
14. Upgrade to `libf2c' as of 1999-05-10.
In 0.5.24 and `egcs' 1.1.2 (versus 0.5.23 and 1.1.1):
=====================================================
In 0.5.24 versus 0.5.23:
========================
There is no `g77' version 0.5.24 at this time, or planned. 0.5.24
is the version number designated for bug fixes and, perhaps, some new
features added, to 0.5.23. Version 0.5.23 requires `gcc' 2.8.1, as
0.5.24 was planned to require.
Due to `EGCS' becoming `GCC' (which is now an acronym for "GNU
Compiler Collection"), and `EGCS' 1.2 becoming officially designated
`GCC' 2.95, there seems to be no need for an actual 0.5.24 release.
To reduce the confusion already resulting from use of 0.5.24 to
designate `g77' versions within `EGCS' versions 1.0 and 1.1, as well as
in versions of `g77' documentation and notices during that period,
"mainline" `g77' version numbering resumes at 0.5.25 with `GCC' 2.95
(`EGCS' 1.2), skipping over 0.5.24 as a placeholder version number.
To repeat, there is no `g77' 0.5.24, but there is now a 0.5.25.
Please remain calm and return to your keypunch units.
In `EGCS' 1.1.2 versus `EGCS' 1.1.1:
====================================
* Fix the `IDate' intrinsic (VXT) (in `libg2c') so the returned year
is in the documented, non-Y2K-compliant range of 0-99, instead of
@ -180,8 +199,8 @@ In 0.5.24 and `egcs' 1.1.2 (versus 0.5.23 and 1.1.1):
* Improve documentation.
In 0.5.24 and `egcs' 1.1.1 (versus 0.5.23 and 1.1):
===================================================
In `EGCS' 1.1.1 versus `EGCS' 1.1:
==================================
* Fix `libg2c' so it performs an implicit `ENDFILE' operation (as
appropriate) whenever a `REWIND' is done.
@ -202,51 +221,28 @@ In 0.5.24 and `egcs' 1.1.1 (versus 0.5.23 and 1.1):
some systems (those with shells requiring `else true' clauses on
`if' constructs for the completion code to be set properly).
In `egcs' 1.1 (versus 0.5.24):
==============================
In `EGCS' 1.1 versus `EGCS' 1.0.3:
==================================
14. Fix `g77' crash compiling code containing the construct
`CMPLX(0.)' or similar.
15. Fix `g77' crash (or apparently infinite run-time) when compiling
certain complicated expressions involving `COMPLEX' arithmetic
(especially multiplication).
16. Fix a code-generation bug that afflicted Intel x86 targets when
`-O2' was specified compiling, for example, an old version of the
`DNRM2' routine.
The x87 coprocessor stack was being mismanaged in cases involving
assigned `GOTO' and `ASSIGN'.
* Align static double-precision variables and arrays on Intel x86
targets regardless of whether `-malign-double' is specified.
Generally, this affects only local variables and arrays having the
`SAVE' attribute or given initial values via `DATA'.
In `egcs' 1.1 (versus `egcs' 1.0.3):
====================================
17. Fix bugs in the `libU77' intrinsic `HostNm' that wrote one byte
15. Fix bugs in the `libU77' intrinsic `HostNm' that wrote one byte
beyond the end of its `CHARACTER' argument, and in the `libU77'
intrinsics `GMTime' and `LTime' that overwrote their arguments.
18. Assumed arrays with negative bounds (such as `REAL A(-1:*)') no
16. Assumed arrays with negative bounds (such as `REAL A(-1:*)') no
longer elicit spurious diagnostics from `g77', even on systems
with pointers having different sizes than integers.
This bug is not known to have existed in any recent version of
`gcc'. It was introduced in an early release of `egcs'.
19. Valid combinations of `EXTERNAL', passing that external as a dummy
17. Valid combinations of `EXTERNAL', passing that external as a dummy
argument without explicitly giving it a type, and, in a subsequent
program unit, referencing that external as an external function
with a different type no longer crash `g77'.
20. `CASE DEFAULT' no longer crashes `g77'.
18. `CASE DEFAULT' no longer crashes `g77'.
21. The `-Wunused' option no longer issues a spurious warning about
19. The `-Wunused' option no longer issues a spurious warning about
the "master" procedure generated by `g77' for procedures
containing `ENTRY' statements.
@ -271,25 +267,25 @@ In `egcs' 1.1 (versus `egcs' 1.0.3):
`libf2c' environment, even when `libf2c' (now `libg2c') is a
shared library.
22. `g77' no longer installs the `f77' command and `f77.1' man page in
20. `g77' no longer installs the `f77' command and `f77.1' man page in
the `/usr' or `/usr/local' heirarchy, even if the `f77-install-ok'
file exists in the source or build directory. See the
installation documentation for more information.
23. `g77' no longer installs the `libf2c.a' library and `f2c.h'
21. `g77' no longer installs the `libf2c.a' library and `f2c.h'
include file in the `/usr' or `/usr/local' heirarchy, even if the
`f2c-install-ok' or `f2c-exists-ok' files exist in the source or
build directory. See the installation documentation for more
information.
24. The `libf2c.a' library produced by `g77' has been renamed to
22. The `libf2c.a' library produced by `g77' has been renamed to
`libg2c.a'. It is installed only in the `gcc' "private" directory
heirarchy, `gcc-lib'. This allows system administrators and users
to choose which version of the `libf2c' library from `netlib' they
wish to use on a case-by-case basis. See the installation
documentation for more information.
25. The `f2c.h' include (header) file produced by `g77' has been
23. The `f2c.h' include (header) file produced by `g77' has been
renamed to `g2c.h'. It is installed only in the `gcc' "private"
directory heirarchy, `gcc-lib'. This allows system administrators
and users to choose which version of the include file from
@ -301,11 +297,11 @@ In `egcs' 1.1 (versus `egcs' 1.0.3):
than the one built and installed as part of the same `g77' version
is picked up.
26. During the configuration and build process, `g77' creates
24. During the configuration and build process, `g77' creates
subdirectories it needs only as it needs them. Other cleaning up
of the configuration and build process has been performed as well.
27. `install-info' now used to update the directory of Info
25. `install-info' now used to update the directory of Info
documentation to contain an entry for `g77' (during installation).
* Some diagnostics have been changed from warnings to errors, to
@ -314,24 +310,34 @@ In `egcs' 1.1 (versus `egcs' 1.0.3):
in the `OPEN', `INQUIRE', `READ', and `WRITE' statements, and
about truncations of various sorts of constants.
28. Improve compilation of `FORMAT' expressions so that a null byte is
26. Improve compilation of `FORMAT' expressions so that a null byte is
appended to the last operand if it is a constant. This provides a
cleaner run-time diagnostic as provided by `libf2c' for statements
like `PRINT '(I1', 42'.
29. Improve documentation and indexing.
27. Improve documentation and indexing.
30. The upgrade to `libf2c' as of 1998-06-18 should fix a variety of
28. The upgrade to `libf2c' as of 1998-06-18 should fix a variety of
problems, including those involving some uses of the `T' format
specifier, and perhaps some build (porting) problems as well.
In 0.5.24 and `egcs' 1.1 (versus 0.5.23):
=========================================
In `EGCS' 1.1 versus `g77' 0.5.23:
==================================
31. `g77' no longer produces incorrect code and initial values for
29. Fix a code-generation bug that afflicted Intel x86 targets when
`-O2' was specified compiling, for example, an old version of the
`DNRM2' routine.
The x87 coprocessor stack was being mismanaged in cases involving
assigned `GOTO' and `ASSIGN'.
30. `g77' no longer produces incorrect code and initial values for
`EQUIVALENCE' and `COMMON' aggregates that, due to "unnatural"
ordering of members vis-a-vis their types, require initial padding.
31. Fix `g77' crash compiling code containing the construct
`CMPLX(0.)' or similar.
32. `g77' no longer crashes when compiling code containing
specification statements such as `INTEGER(KIND=7) PTR'.
@ -346,6 +352,16 @@ In 0.5.24 and `egcs' 1.1 (versus 0.5.23):
Previously, `g77' treated these expressions as denoting special
"pointer" arguments for the purposes of filewide analysis.
34. Fix `g77' crash (or apparently infinite run-time) when compiling
certain complicated expressions involving `COMPLEX' arithmetic
(especially multiplication).
* Align static double-precision variables and arrays on Intel x86
targets regardless of whether `-malign-double' is specified.
Generally, this affects only local variables and arrays having the
`SAVE' attribute or given initial values via `DATA'.
* The `g77' driver now ensures that `-lg2c' is specified in the link
phase prior to any occurrence of `-lm'. This prevents
accidentally linking to a routine in the SunOS4 `-lm' library when
@ -366,9 +382,9 @@ In 0.5.24 and `egcs' 1.1 (versus 0.5.23):
* The F90 `System_Clock' intrinsic allows the optional arguments
(except for the `Count' argument) to be omitted.
34. Upgrade to `libf2c' as of 1998-06-18.
35. Upgrade to `libf2c' as of 1998-06-18.
35. Improve documentation and indexing.
36. Improve documentation and indexing.
In previous versions:
=====================