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Diffstat (limited to 'gcc/f/NEWS')
| -rw-r--r-- | gcc/f/NEWS | 124 |
1 files changed, 119 insertions, 5 deletions
diff --git a/gcc/f/NEWS b/gcc/f/NEWS index 8be979814f6..143e53e4e94 100644 --- a/gcc/f/NEWS +++ b/gcc/f/NEWS @@ -9,11 +9,125 @@ News About GNU Fortran Changes made to recent versions of GNU Fortran are listed below, with the most recent version first. - The changes are generally listed with code-generation bugs first, -followed by compiler crashes involving valid code, new features, fixes -to existing features, new diagnostics, internal improvements, and -miscellany. This order is not strict--for example, some items involve -a combination of these elements. + The changes are generally listed in order: + + 1. Code-generation and run-time-library bugs + + 2. Compiler and run-time-library crashes involving valid code + + 3. New features + + 4. Fixes and enhancements to existing features + + 5. New diagnostics + + 6. Internal improvements + + 7. Miscellany + + This order is not strict--for example, some items involve a +combination of these elements. + +In 0.5.22: +========== + + * Fix code generation for iterative `DO' loops that have one or more + references to the iteration variable, or to aliases of it, in + their control expressions. For example, `DO 10 J=2,J' now is + compiled correctly. + + * 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'. + + * Fix `DTime' intrinsic so as not to truncate results to integer + values (on some systems). + + * Fix `SIGNAL' intrinsic so it offers portable support for 64-bit + systems (such as Digital Alphas running GNU/Linux). + + * Fix run-time crash involving `NAMELIST' on 64-bit machines such as + Alphas. + + * Fix `g77' version of `libf2c' so it no longer produces a spurious + `I/O recursion' diagnostic at run time when an I/O operation (such + as `READ *,I') is interrupted in a manner that causes the program + to be terminated via the `f_exit' routine (such as via `C-c'). + + * Fix `g77' crash triggered by `CASE' statement with an omitted + lower or upper bound. + + * Fix `g77' crash compiling references to `CPU_Time' intrinsic. + + * Fix `g77' crash (or apparently infinite run-time) when compiling + certain complicated expressions involving `COMPLEX' arithmetic + (especially multiplication). + + * Fix `g77' crash on statements such as `PRINT *, + (REAL(Z(I)),I=1,2)', where `Z' is `DOUBLE COMPLEX'. + + * Fix a `g++' crash. + + * Support `FORMAT(I<EXPR>)' when EXPR is a compile-time constant + `INTEGER' expression. + + * Fix `g77' `-g' option so procedures that use `ENTRY' can be + stepped through, line by line, in `gdb'. + + * Fix a profiling-related bug in `gcc' back end for Intel x86 + architecture. + + * Allow any `REAL' argument to intrinsics `Second' and `CPU_Time'. + + * Allow any numeric argument to intrinsics `Int2' and `Int8'. + + * Use `tempnam', if available, to open scratch files (as in + `OPEN(STATUS='SCRATCH')' so that the `TMPDIR' environment variable, + if present, is used. + + * Rename the `gcc' keyword `restrict' to `__restrict__', to avoid + rejecting valid, existing, C programs. Support for `restrict' is + now more like support for `complex'. + + * Fix `-fpedantic' to not reject procedure invocations such as + `I=J()' and `CALL FOO()'. + + * Fix `-fugly-comma' to affect invocations of only external + procedures. Restore rejection of gratuitous trailing omitted + arguments to intrinsics, as in `I=MAX(3,4,,)'. + + * Fix compiler so it accepts `-fgnu-intrinsics-*' and + `-fbadu77-intrinsics-*' options. + + * 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.) + + * 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'. + + * Fix various crashes involving code with diagnosed errors. + + * Fix cross-compilation bug when configuring `libf2c'. + + * Improve diagnostics. + + * Improve documentation and indexing. + + * 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: ========== |