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Diffstat (limited to 'gcc-4.9/gcc/fortran/gfortran.texi')
| -rw-r--r-- | gcc-4.9/gcc/fortran/gfortran.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/fortran/gfortran.texi b/gcc-4.9/gcc/fortran/gfortran.texi index 725ee8dfc..773ec62a5 100644 --- a/gcc-4.9/gcc/fortran/gfortran.texi +++ b/gcc-4.9/gcc/fortran/gfortran.texi @@ -2003,6 +2003,7 @@ code that uses them running with the GNU Fortran compiler. @c * CARRIAGECONTROL, DEFAULTFILE, DISPOSE and RECORDTYPE I/O specifiers:: @c * Omitted arguments in procedure call:: * Alternate complex function syntax:: +* Volatile COMMON blocks:: @end menu @@ -2197,6 +2198,18 @@ extensions. @command{gfortran} accepts the latter form, which is more common, but not the former. +@node Volatile COMMON blocks +@subsection Volatile @code{COMMON} blocks +@cindex @code{VOLATILE} +@cindex @code{COMMON} + +Some Fortran compilers, including @command{g77}, let the user declare +@code{COMMON} with the @code{VOLATILE} attribute. This is +invalid standard Fortran syntax and is not supported by +@command{gfortran}. Note that @command{gfortran} accepts +@code{VOLATILE} variables in @code{COMMON} blocks since revision 4.3. + + @c --------------------------------------------------------------------- @c Mixed-Language Programming |