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From: "samunaga at amd dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/96797] New: OpenACC fortran acc_get_cuda_stream
Date: Wed, 26 Aug 2020 11:32:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96797

            Bug ID: 96797
           Summary: OpenACC fortran acc_get_cuda_stream
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Keywords: openacc
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: samunaga at amd dot com
  Target Milestone: ---

Created attachment 49130
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D49130&action=3Dedit
source_code.txt contains source code for all the 3 files

When compiling OpenACC fortran code fft.f90 which calls a function defined =
in
cufft.cu file, we are getting the below error

Error:
Function 'acc_get_cuda_stream' at (1) has no IMPLICIT type

Steps to reproduce the error:

nvcc -c --compiler-bindir /usr/bin/ cufft.cu (using GCC7.5.0 for NVCC)
gfortran -fopenacc -o fftf fft.f90 cufft.o -lm -lcufft
-L/usr/local/cuda-10.2/targets/x86_64-linux/lib/ -lcudart

CUDA version: 10.2
GCC version: 10.1

When compiling the equivalent C code(fftc.c), the executable got build with=
out
any errors.

Steps for compilation:
nvcc -c --compiler-bindir /usr/bin/ cufft.cu (using GCC7.5.0 for NVCC)
gcc -fopenacc -o fftc fftc.c cufft.o -lcufft -lcudart
-L/usr/local/cuda-10.2/targets/x86_64-linux/lib

Please find attached source code for cufft.cu,fft.f90,fftc.c

We observed that, acc_get_cuda_stream is declared in openacc.h file(C
implementaion uses this)
But acc_get_cuda_stream is not declared in openacc.f90 file(fortran
implementation uses openacc.mod)=