This patch works around several bugs in gcc-2.95.2.

To apply this patch:
  shell% cd sftpd-1.40/..       (sftpd's parent dir)
  shell% patch < 1.40-to-1.40b.txt


*** sftpd-1.40/Makefile	Sun Nov 14 01:48:04 1999
--- sftpd-g++-2.95.2/Makefile	Fri Mar 24 00:29:31 2000
***************
*** 137,144 ****

  # ---------- main executables -------------
  # displays user's keys (DSA public key is one of primary interest)
! viewkey: libextras.a libsmcrypto.a libsftp.a viewkey.cpp
! 	${link} -o viewkey viewkey.cpp ${linkend}

  # makes user's keys
  makekeys-objs = \
--- 137,148 ----

  # ---------- main executables -------------
  # displays user's keys (DSA public key is one of primary interest)
! # (Bug workaround: even though viewkey does not use any of the
! # functions in addent.o or weakkey.o, if I don't link with them,
! # gcc-2.95.{1,2} will die with a cryptic linker error due to very
! # stupid template instantiation mechanism)
! viewkey: libextras.a libsmcrypto.a libsftp.a viewkey.cpp addent.o weakkey.o
! 	${link} -o viewkey viewkey.cpp addent.o weakkey.o ${linkend}

  # makes user's keys
  makekeys-objs = \
***************
*** 171,179 ****
  tsint: libextras.a libsmcrypto.a tsint.cpp
  	${link} -o tsint tsint.cpp -L. -lsmcrypto -lextras -lgmp ${platform_libraries}

! # test DSA
! sdsa: libextras.a libsmcrypto.a sdsa.cpp
! 	${link} -o sdsa sdsa.cpp -DTEST_SDSA ${linkend}

  # test ElGamal
  selgamal: libextras.a libsmcrypto.a selgamal.cpp
--- 175,184 ----
  tsint: libextras.a libsmcrypto.a tsint.cpp
  	${link} -o tsint tsint.cpp -L. -lsmcrypto -lextras -lgmp ${platform_libraries}

! # test DSA
! # (Bug workaround: usercfg.o required under gcc-2.95.{1,2})
! sdsa: libextras.a libsmcrypto.a sdsa.cpp usercfg.o
! 	${link} -o sdsa sdsa.cpp -DTEST_SDSA usercfg.o ${linkend}

  # test ElGamal
  selgamal: libextras.a libsmcrypto.a selgamal.cpp
*** sftpd-1.40/crypto/iterhash.cpp	Thu Sep 30 04:30:23 1999
--- sftpd-g++-2.95.2/crypto/iterhash.cpp	Thu Mar 23 17:39:14 2000
***************
*** 94,100 ****
  }

  // provide empty definitions to avoid instantiation warnings
! template <class T> void IteratedHash<T>::Init() {}
! template <class T> void IteratedHash<T>::HashBlock(const T * /*input*/) {}


--- 94,100 ----
  }

  // provide empty definitions to avoid instantiation warnings
! //template <class T> void IteratedHash<T>::Init() {}
! //template <class T> void IteratedHash<T>::HashBlock(const T * /*input*/) {}


*** sftpd-1.40/crypto/misc.cpp	Thu Sep 30 04:30:23 1999
--- sftpd-g++-2.95.2/crypto/misc.cpp	Thu Mar 23 17:39:49 2000
***************
*** 79,85 ****

  void *allocCheckOverrun(int bytes)
  {
!   char *ret = new byte[bytes+8];    // extra 4 bytes on each side
    memcpy(ret, startPost, 4);
    memcpy(ret+4+bytes, endPost, 4);
    return ret+4;
--- 79,85 ----

  void *allocCheckOverrun(int bytes)
  {
!   char *ret = new char[bytes+8];    // extra 4 bytes on each side
    memcpy(ret, startPost, 4);
    memcpy(ret+4+bytes, endPost, 4);
    return ret+4;
*** sftpd-1.40/crypto/misc.h	Thu Sep 30 04:30:24 1999
--- sftpd-g++-2.95.2/crypto/misc.h	Fri Mar 24 00:33:04 2000
***************
*** 151,164 ****
  		{SecFree(ptr, size);}

  #if defined(__GNUC__) || defined(__BCPLUSPLUS__)
! 	operator const void *() const
! 		{return ptr;}
  	operator void *()
  		{return ptr;}
  #endif
  
! 	operator const T *() const
! 		{return ptr;}
  	operator T *()
  		{return ptr;}
  
--- 151,166 ----
  		{SecFree(ptr, size);}
  
  #if defined(__GNUC__) || defined(__BCPLUSPLUS__)
!         // sm: more gcc-2.95.2 concessions
!        	//operator const void *() const
! 	//  	{return ptr;}
  	operator void *()
  		{return ptr;}
  #endif
  
!         // sm: gcc-2.95.{1,2} doesn't like this (because it is a prissy little biatch)
!         //operator const T *() const
!     	//	{return ptr;}
  	operator T *()
  		{return ptr;}