https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63921
Bug ID: 63921
Summary: [F08] pointer function as lvalue doesn't work when the
function is a type bound function
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: mirco.valentini at polimi dot it
Created attachment 34006
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34006&action=edit
Source code useful to explain the bug
If I try to use a type bounded function as lvalue
the compiler throw this error
!...COMPILER
VERSION............................................................
Using built-in specs.
COLLECT_GCC=/opt/gcc/5.0/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/gcc/5.0/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../src/configure --prefix /opt/gcc/5.0/
Thread model: posix
gcc version 4.9.2 (GCC)
!...............................................................................
!...COMPILER
OUTPUT.............................................................
lvalue.f90:110.2:
STENCIL%JMP( 1, 1 ) = 10.0d0 + STENCIL%JMP( 1, 1 )
1
Error: 'lvalue_jmp' in variable definition context (assignment) at (1) is not a
variable
make: *** [test.x] Error 1
!...............................................................................
!...COMPILING
COMMAND...........................................................
gfortran -save-temps lvalue.f90 -o test.x
!...............................................................................
If I want to modify the data pointed by the function I need to use a temporary
variable.
!... BUG ......................................................................
...
!...Running version with temporary pointer
!real_tmp_ptr => STENCIL%JMP( 1, 1 )
!real_tmp_ptr = 10.0d0 + STENCIL%JMP( 1, 1 )
!...Not running version
STENCIL%JMP( 1, 1 ) = 10.0d0 + STENCIL%JMP( 1, 1 )
...
!..............................................................................
Mirco
