mirror of git://gcc.gnu.org/git/gcc.git
Dave Love
parent
a515a901af
commit
8cacfe1153
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@ -219,7 +219,7 @@ Enough disk space
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`makeinfo' is part of the GNU `texinfo' package; `makeinfo'
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version 1.68 is distributed as part of GNU `texinfo' version
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3.11.
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3.12.
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`makeinfo' is not needed in the typical case of installing `gcc'
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and `g77'. *Note Missing tools?::, for information on when it
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281
gcc/f/NEWS
281
gcc/f/NEWS
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@ -1,5 +1,5 @@
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This file lists recent changes to the GNU Fortran compiler. Copyright
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(C) 1995, 1996 Free Software Foundation, Inc. You may copy,
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(C) 1995, 96, 97, 1998 Free Software Foundation, Inc. You may copy,
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distribute, and modify it freely as long as you preserve this copyright
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notice and permission notice.
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@ -29,8 +29,162 @@ with the most recent version first.
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This order is not strict--for example, some items involve a
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combination of these elements.
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In `egcs' 1.1:
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==============
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Note that two variants of `g77' are tracked below. The `egcs'
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variant is described vis-a-vis previous versions of `egcs' and/or an
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official FSF version, as appropriate.
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Therefore, `egcs' versions sometimes have multiple listings to help
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clarify how they differ from other versions, though this can make
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getting a complete picture of what a particular `egcs' version contains
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somewhat more difficult.
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In 0.5.24 and `egcs' 1.1.1 (versus 0.5.23 and 1.1):
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===================================================
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* Fix `libg2c' so it performs an implicit `ENDFILE' operation (as
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appropriate) whenever a `REWIND' is done.
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(This bug was introduced in 0.5.23 and `egcs' 1.1 in `g77''s
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version of `libf2c'.)
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* Fix `libg2c' so it no longer crashes with a spurious diagnostic
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upon doing any I/O following a direct formatted write.
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(This bug was introduced in 0.5.23 and `egcs' 1.1 in `g77''s
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version of `libf2c'.)
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* Fix `g77' so it no longer crashes compiling references to the
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`Rand' intrinsic on some systems.
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* Fix `g77' portion of installation process so it works better on
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some systems (those with shells requiring `else true' clauses on
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`if' constructs for the completion code to be set properly).
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In `egcs' 1.1 (versus 0.5.24):
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==============================
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* Fix `g77' crash compiling code containing the construct
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`CMPLX(0.)' or similar.
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* Fix `g77' crash (or apparently infinite run-time) when compiling
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certain complicated expressions involving `COMPLEX' arithmetic
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(especially multiplication).
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* Fix a code-generation bug that afflicted Intel x86 targets when
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`-O2' was specified compiling, for example, an old version of the
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`DNRM2' routine.
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The x87 coprocessor stack was being mismanaged in cases involving
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assigned `GOTO' and `ASSIGN'.
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* Align static double-precision variables and arrays on Intel x86
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targets regardless of whether `-malign-double' is specified.
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Generally, this affects only local variables and arrays having the
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`SAVE' attribute or given initial values via `DATA'.
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In `egcs' 1.1 (versus `egcs' 1.0.3):
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====================================
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* Fix bugs in the `libU77' intrinsic `HostNm' that wrote one byte
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beyond the end of its `CHARACTER' argument, and in the `libU77'
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intrinsics `GMTime' and `LTime' that overwrote their arguments.
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* Assumed arrays with negative bounds (such as `REAL A(-1:*)') no
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longer elicit spurious diagnostics from `g77', even on systems
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with pointers having different sizes than integers.
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This bug is not known to have existed in any recent version of
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`gcc'. It was introduced in an early release of `egcs'.
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* Valid combinations of `EXTERNAL', passing that external as a dummy
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argument without explicitly giving it a type, and, in a subsequent
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program unit, referencing that external as an external function
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with a different type no longer crash `g77'.
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* `CASE DEFAULT' no longer crashes `g77'.
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* The `-Wunused' option no longer issues a spurious warning about
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the "master" procedure generated by `g77' for procedures
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containing `ENTRY' statements.
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* Support `FORMAT(I<EXPR>)' when EXPR is a compile-time constant
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`INTEGER' expression.
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* Fix `g77' `-g' option so procedures that use `ENTRY' can be
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stepped through, line by line, in `gdb'.
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* Allow any `REAL' argument to intrinsics `Second' and `CPU_Time'.
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* Use `tempnam', if available, to open scratch files (as in
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`OPEN(STATUS='SCRATCH')') so that the `TMPDIR' environment
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variable, if present, is used.
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* `g77''s version of `libf2c' separates out the setting of global
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state (such as command-line arguments and signal handling) from
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`main.o' into distinct, new library archive members.
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This should make it easier to write portable applications that
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have their own (non-Fortran) `main()' routine properly set up the
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`libf2c' environment, even when `libf2c' (now `libg2c') is a
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shared library.
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* `g77' no longer installs the `f77' command and `f77.1' man page in
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the `/usr' or `/usr/local' heirarchy, even if the `f77-install-ok'
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file exists in the source or build directory. See the
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installation documentation for more information.
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* `g77' no longer installs the `libf2c.a' library and `f2c.h'
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include file in the `/usr' or `/usr/local' heirarchy, even if the
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`f2c-install-ok' or `f2c-exists-ok' files exist in the source or
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build directory. See the installation documentation for more
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information.
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* The `libf2c.a' library produced by `g77' has been renamed to
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`libg2c.a'. It is installed only in the `gcc' "private" directory
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heirarchy, `gcc-lib'. This allows system administrators and users
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to choose which version of the `libf2c' library from `netlib' they
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wish to use on a case-by-case basis. See the installation
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documentation for more information.
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* The `f2c.h' include (header) file produced by `g77' has been
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renamed to `g2c.h'. It is installed only in the `gcc' "private"
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directory heirarchy, `gcc-lib'. This allows system administrators
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and users to choose which version of the include file from
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`netlib' they wish to use on a case-by-case basis. See the
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installation documentation for more information.
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* The `g77' command now expects the run-time library to be named
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`libg2c.a' instead of `libf2c.a', to ensure that a version other
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than the one built and installed as part of the same `g77' version
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is picked up.
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* During the configuration and build process, `g77' creates
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subdirectories it needs only as it needs them. Other cleaning up
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of the configuration and build process has been performed as well.
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* `install-info' now used to update the directory of Info
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documentation to contain an entry for `g77' (during installation).
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* Some diagnostics have been changed from warnings to errors, to
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prevent inadvertent use of the resulting, probably buggy, programs.
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These mostly include diagnostics about use of unsupported features
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in the `OPEN', `INQUIRE', `READ', and `WRITE' statements, and
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about truncations of various sorts of constants.
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* Improve compilation of `FORMAT' expressions so that a null byte is
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appended to the last operand if it is a constant. This provides a
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cleaner run-time diagnostic as provided by `libf2c' for statements
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like `PRINT '(I1', 42'.
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* Improve documentation and indexing.
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* The upgrade to `libf2c' as of 1998-06-18 should fix a variety of
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problems, including those involving some uses of the `T' format
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specifier, and perhaps some build (porting) problems as well.
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In 0.5.24 and `egcs' 1.1 (versus 0.5.23):
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=========================================
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* `g77' no longer produces incorrect code and initial values for
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`EQUIVALENCE' and `COMMON' aggregates that, due to "unnatural"
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@ -62,17 +216,17 @@ In `egcs' 1.1:
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and other information, not to the longstanding deficiencies
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vis-a-vis `COMMON' and `EQUIVALENCE'.
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* The F90 `DATE_AND_TIME' intrinsic now is supported.
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* The F90 `Date_and_Time' intrinsic now is supported.
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* The F90 `SYSTEM_CLOCK' intrinsic allows the optional arguments
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* The F90 `System_Clock' intrinsic allows the optional arguments
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(except for the `Count' argument) to be omitted.
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* Upgrade to `libf2c' as of 1998-06-18.
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* Improve documentation and indexing.
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In 0.5.23:
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==========
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In 0.5.23 (versus 0.5.22):
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==========================
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* This release contains several regressions against version 0.5.22
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of `g77', due to using the "vanilla" `gcc' back end instead of
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@ -92,18 +246,17 @@ In 0.5.23:
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`-fargument-noalias-global', and the corresponding
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alias-analysis code.
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(Version 1.0.1 of `egcs' has the alias-analysis code, but not
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the `__restrict__' keyword. `egcs' `g77' users benefit from
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the alias-analysis code despite the lack of the
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`__restrict__' keyword, which is a C-language construct.)
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(`egcs' has the alias-analysis code, but not the
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`__restrict__' keyword. `egcs' `g77' users benefit from the
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alias-analysis code despite the lack of the `__restrict__'
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keyword, which is a C-language construct.)
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- Support for the GNU compiler options `-fmove-all-movables',
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`-freduce-all-givs', and `-frerun-loop-opt'.
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(Version 1.0.1 of `egcs' supports these options. `g77' users
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of `egcs' benefit from them even if they are not explicitly
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specified, because the defaults are optimized for `g77'
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users.)
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(`egcs' supports these options. `g77' users of `egcs'
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benefit from them even if they are not explicitly specified,
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because the defaults are optimized for `g77' users.)
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- Support for the `-W' option warning about integer division by
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zero.
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@ -198,8 +351,8 @@ In 0.5.23:
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some uses of the `T' format specifier, and perhaps some build
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(porting) problems as well.
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In 0.5.22:
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==========
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In 0.5.22 (versus 0.5.21):
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==========================
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* Fix code generation for iterative `DO' loops that have one or more
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references to the iteration variable, or to aliases of it, in
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@ -216,7 +369,7 @@ In 0.5.22:
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* Fix `DTime' intrinsic so as not to truncate results to integer
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values (on some systems).
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* Fix `SIGNAL' intrinsic so it offers portable support for 64-bit
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* Fix `Signal' intrinsic so it offers portable support for 64-bit
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systems (such as Digital Alphas running GNU/Linux).
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* Fix run-time crash involving `NAMELIST' on 64-bit machines such as
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@ -255,8 +408,8 @@ In 0.5.22:
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* Allow any numeric argument to intrinsics `Int2' and `Int8'.
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* Use `tempnam', if available, to open scratch files (as in
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`OPEN(STATUS='SCRATCH')' so that the `TMPDIR' environment variable,
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if present, is used.
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`OPEN(STATUS='SCRATCH')') so that the `TMPDIR' environment
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variable, if present, is used.
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* Rename the `gcc' keyword `restrict' to `__restrict__', to avoid
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rejecting valid, existing, C programs. Support for `restrict' is
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@ -282,7 +435,7 @@ In 0.5.22:
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like `PRINT '(I)garbage', 1' by printing `(I)garbage' as the
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format string.)
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* Improve compilation of FORMAT expressions so that a null byte is
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* Improve compilation of `FORMAT' expressions so that a null byte is
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appended to the last operand if it is a constant. This provides a
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cleaner run-time diagnostic as provided by `libf2c' for statements
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like `PRINT '(I1', 42'.
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@ -299,6 +452,92 @@ In 0.5.22:
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bug that afflicted 64-bit systems with 32-bit integers (such as
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Digital Alpha running GNU/Linux).
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In `egcs' 1.0.2 (versus `egcs' 1.0.1):
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======================================
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* Fix `g77' crash triggered by `CASE' statement with an omitted
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lower or upper bound.
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* Fix `g77' crash on statements such as `PRINT *,
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(REAL(Z(I)),I=1,2)', where `Z' is `DOUBLE COMPLEX'.
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* Fix `-fPIC' (such as compiling for ELF targets) on the Intel x86
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architecture target so invalid assembler code is no longer
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produced.
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* Fix `-fpedantic' to not reject procedure invocations such as
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`I=J()' and `CALL FOO()'.
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* Fix `-fugly-comma' to affect invocations of only external
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procedures. Restore rejection of gratuitous trailing omitted
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arguments to intrinsics, as in `I=MAX(3,4,,)'.
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* Fix compiler so it accepts `-fgnu-intrinsics-*' and
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`-fbadu77-intrinsics-*' options.
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In `egcs' 1.0.1 (versus `egcs' 1.0):
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====================================
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* Fix run-time crash involving `NAMELIST' on 64-bit machines such as
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Alphas.
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In `egcs' 1.0 (versus 0.5.21):
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==============================
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* Version 1.0 of `egcs' contains several regressions against version
|
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0.5.21 of `g77', due to using the "vanilla" `gcc' back end instead
|
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of patching it to fix a few bugs and improve performance in a few
|
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cases.
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*Note Actual Bugs We Haven't Fixed Yet: Actual Bugs, available in
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plain-text format in `gcc/f/BUGS', for information on the known
|
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bugs in this version, including the regressions.
|
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Features that have been dropped from this version of `g77' due to
|
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their being implemented via `g77'-specific patches to the `gcc'
|
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back end in previous releases include:
|
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- Support for the C-language `restrict' keyword.
|
||||
|
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- Support for the `-W' option warning about integer division by
|
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zero.
|
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|
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- The Intel x86-specific option `-malign-double' applying to
|
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stack-allocated data as well as statically-allocate data.
|
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|
||||
Note that the `gcc/f/gbe/' subdirectory has been removed from this
|
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distribution as a result of `g77' being fully integrated with the
|
||||
`egcs' variant of the `gcc' back end.
|
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|
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* Fix code generation for iterative `DO' loops that have one or more
|
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references to the iteration variable, or to aliases of it, in
|
||||
their control expressions. For example, `DO 10 J=2,J' now is
|
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compiled correctly.
|
||||
|
||||
* Fix `DTime' intrinsic so as not to truncate results to integer
|
||||
values (on some systems).
|
||||
|
||||
* Remove support for non-`egcs' versions of `gcc'.
|
||||
|
||||
* Remove support for the `--driver' option, as `g77' now does all
|
||||
the driving, just like `gcc'.
|
||||
|
||||
* Allow any numeric argument to intrinsics `Int2' and `Int8'.
|
||||
|
||||
* Improve diagnostic messages from `libf2c' so it is more likely
|
||||
that the printing of the active format string is limited to the
|
||||
string, with no trailing garbage being printed.
|
||||
|
||||
(Unlike `f2c', `g77' did not append a null byte to its compiled
|
||||
form of every format string specified via a `FORMAT' statement.
|
||||
However, `f2c' would exhibit the problem anyway for a statement
|
||||
like `PRINT '(I)garbage', 1' by printing `(I)garbage' as the
|
||||
format string.)
|
||||
|
||||
* Upgrade to `libf2c' as of 1997-09-23. This fixes a formatted-I/O
|
||||
bug that afflicted 64-bit systems with 32-bit integers (such as
|
||||
Digital Alpha running GNU/Linux).
|
||||
|
||||
In 0.5.21:
|
||||
==========
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue