重复调用的Fortran从C函数时分段故障 [英] Segmentation fault when calling a C function from Fortran repeatedly

问题描述

我有一个Fortran 90的程序，在C函数重复调用。第一次函数用于一切顺利，但第二次code试图访问它提供了以下错误功能：

I have a Fortran 90 program which repeatedly calls on a C function. The first time the function is used all goes well, but the second time the code tries to access the function it gives the following error:

计划接收信号SIGSEGV：段错误 - 无效的内存引用。

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

我在Windows上使用gfortran v.4.6，链接，而我没有源$ C ​​$ C库。图书馆来找我作为一个DLL，我用gendef和dlltool创建。一个库链接。

I am using gfortran v.4.6 on windows, linking to a library to which I have no source code. The library came to me as a DLL and I used gendef and dlltool to create an .a library to link to.

在code如下：

PROGRAM cmod
  USE, INTRINSIC :: ISO_C_BINDING
  INTERFACE
    LOGICAL (C_BOOL) FUNCTION clover(scen,reg,soil,top,rain,depth,numd,nums,numb, numd,addn,srate,stype,nloss,ploss,ErrStr) BIND (C, name = "ClOvr")

    USE, INTRINSIC :: ISO_C_BINDING
    INTEGER (C_INT), INTENT(IN), VALUE :: scen,reg,soil,topo,depth

    REAL (C_DOUBLE), INTENT(IN), VALUE :: rain,numd,nums,numb,numd

    REAL (C_DOUBLE), INTENT(IN), VALUE :: addn,srate
    INTEGER (C_INT), INTENT(IN), VALUE :: stype
    REAL (C_DOUBLE), INTENT(OUT) :: nloss,ploss
    CHARACTER(C_CHAR), INTENT(OUT) :: ErrStr(*)
    END FUNCTION clover
  END INTERFACE
  .....

  do
  .....
    result = clover(a,b,c, d, e, f, g, h, sb, sd, an, sr, st,lossx,lossy,err)
  ......
    result = clover(a,b,c, d, e, f, g, h, sb, sd, an, sr, st,lossx,lossy,err)
  end do
END PROGRAM cmod

我没有C code，但我从IBM的Fortran移植。

I don't have the C code, but I am porting from IBM Fortran.

该接口的声明包含这两个行

The interface declaration contains these two lines

!DEC$ ATTRIBUTES  VALUE :: scen,reg,soil,top,rain,depth,numd,nums,numb,numd,addn,srate,stype

!DEC$ ATTRIBUTES  REFERENCE :: lossx,lossy,ErrStr

IBM的FORTRAN使用以下code加载库并访问功能：

The IBM fortran uses the following code to load the library and access the function:

pointer (q,clover)
p = loadlibrary("clover.dll")
q = getprocaddress(p, "ClOvr")

所以我可能会丢失在翻译的东西GNU FORTRAN

So I might be missing something in the translation to GNU fortran

推荐答案

我发现我的问题：当我编译，我必须使用 -mrtd（sdtcall）

I've found my problem: when I compile, I have to use the -mrtd (sdtcall)

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