build failure with DECCXX compiler

[Jeff Hill]

The DECCXX compiler found some issues in the ca client library with unexpected calls to this template in the comBuf class:

    template < class T >
    bool push ( const T & value );

Additional information:
Many thanks to Kazuro FURUKAWA for his help with this issue.

See also <a href="http://www-linac.kek.jp/epics/osf/">http://www-linac.kek.jp/epics/osf/</a>

Original Mantis Bug: mantis-322
    http://www.aps.anl.gov/epics/mantis/view_bug_page.php?f_id=322

[Jeff Hill (johill-lanl)]

Fixed in R3.14.10 using this patch:

cvs diff -wb (in directory C:\hill\R3.14.dll_hell_fix\epics\base\src\ca\)
? Edit1.TXT
? RCa01512
? tst.cpp
Index: comBuf.h
===================================================================
RCS file: /net/phoebus/epicsmgr/cvsroot/epics/base/src/ca/comBuf.h,v
retrieving revision 1.29.2.6
diff -u -b -w -b -r1.29.2.6 comBuf.h
--- comBuf.h 28 Jul 2008 16:19:49 -0000 1.29.2.6
+++ comBuf.h 2 Oct 2008 15:31:52 -0000
@@ -116,6 +116,8 @@
     epicsUInt8 buf [ comBufSize ];
     void * operator new ( size_t size );
     void operator delete ( void * );
+ template < class T >
+ bool push ( const T * ); // disabled
 };

 inline void * comBuf::operator new ( size_t size,
Index: comQueSend.cpp
===================================================================
RCS file: /net/phoebus/epicsmgr/cvsroot/epics/base/src/ca/comQueSend.cpp,v
retrieving revision 1.36.2.3
diff -u -b -w -b -r1.36.2.3 comQueSend.cpp
--- comQueSend.cpp 4 Nov 2005 14:37:02 -0000 1.36.2.3
+++ comQueSend.cpp 2 Oct 2008 15:21:06 -0000
@@ -106,10 +106,7 @@

 void comQueSend::copy_dbr_string ( const void * pValue )
 {
- // this extra step is required by Borland BCC 5.5
- const dbr_string_t & str =
- * static_cast <const dbr_string_t *> ( pValue );
- this->push ( str );
+ this->push ( static_cast < const char * > ( pValue ), MAX_STRING_SIZE );
 }

 void comQueSend::copy_dbr_short ( const void * pValue )
@@ -186,7 +183,7 @@

 void comQueSend::copy_dbr_string ( const void *pValue, unsigned nElem )
 {
- this->push ( static_cast <const dbr_string_t *> ( pValue ), nElem );
+ this->push ( static_cast < const char * > ( pValue ), nElem * MAX_STRING_SIZE );
 }

 void comQueSend::copy_dbr_short ( const void *pValue, unsigned nElem )
Index: comQueSend.h
===================================================================
RCS file: /net/phoebus/epicsmgr/cvsroot/epics/base/src/ca/comQueSend.h,v
retrieving revision 1.21.2.3
diff -u -b -w -b -r1.21.2.3 comQueSend.h
--- comQueSend.h 11 Jan 2007 21:38:59 -0000 1.21.2.3
+++ comQueSend.h 2 Oct 2008 15:04:57 -0000
@@ -149,6 +149,9 @@
         this->pushComBuf ( *pComBuf );
     }

+ template < class T >
+ inline void push ( const T * ); // disabled
+
     comQueSend ( const comQueSend & );
     comQueSend & operator = ( const comQueSend & );
 };

[Andrew Johnson (anj)]

R3.14.10 released.