http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47583
Summary: Inquire affected by previous read
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: har...@klimachs.de
Created attachment 23205
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23205
Minimal example
The use of inquire seems to be affected by a previous read, in the same file,
even if in a totally different scope. Attached is a minimal module illustrating
this.
There is a subroutine, reading some data unformatted, followed by another one
which inquires the IO length of an array with intent(in).
Compilation results in the following output:
gfortran-mp-4.6 -v -save-temps -c testinquire.f90
Using built-in specs.
COLLECT_GCC=gfortran-mp-4.6
COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin10/4.6.0/lto-wrapper
Target: x86_64-apple-darwin10
Configured with: ../gcc-4.6-20110108/configure --prefix=/opt/local
--build=x86_64-apple-darwin10 --libdir=/opt/local/lib/gcc46
--includedir=/opt/local/include/gcc46 --infodir=/opt/local/share/info
--mandir=/opt/local/share/man --datarootdir=/opt/local/share/gcc-4.6
--with-local-prefix=/opt/local --with-system-zlib --disable-nls
--program-suffix=-mp-4.6 --with-gxx-include-dir=/opt/local/include/gcc46/c++/
--with-gmp=/opt/local --with-mpfr=/opt/local --with-mpc=/opt/local
--enable-stage1-checking --disable-multilib --enable-fully-dynamic-string
--enable-languages=c,c++,objc,obj-c++,fortran
Thread model: posix
gcc version 4.6.0 20110108 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-mmacosx-version-min=10.6.6' '-v' '-save-temps' '-c'
'-mtune=core2'
/opt/local/libexec/gcc/x86_64-apple-darwin10/4.6.0/f951 testinquire.f90 -fPIC
-quiet -dumpbase testinquire.f90 -mmacosx-version-min=10.6.6 -mtune=core2
-auxbase testinquire -version -fintrinsic-modules-path
/opt/local/lib/gcc46/gcc/x86_64-apple-darwin10/4.6.0/finclude -o testinquire.s
GNU Fortran (GCC) version 4.6.0 20110108 (experimental) (x86_64-apple-darwin10)
compiled by GNU C version 4.6.0 20110108 (experimental), GMP version 5.0.1,
MPFR version 3.0.0-p8, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU Fortran (GCC) version 4.6.0 20110108 (experimental) (x86_64-apple-darwin10)
compiled by GNU C version 4.6.0 20110108 (experimental), GMP version 5.0.1,
MPFR version 3.0.0-p8, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
testinquire.f90:20.25:
inquire(iolength=rl) sizedat
1
Error: Dummy argument 'sizedat' with INTENT(IN) in variable definition context
(item in READ) at (1)
If the order of the subroutines is changed, that is, if the read appears after
the inquire statement, the code is compiled as expected.
At least in gfortran 4.4 this issue was not present.
