Could you please help us to find root cause for the below warning message. We are repeatedly getting this warning message while compiling a C module.
%LINK-W-MULDEF, symbol DECC$REALLOC multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$MALLOC multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$CALLOC multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$CFREE multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$FREE multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
We tried all possible options available on the net. Will be a great help if someone can get more insights on this.
Please post the commands used to compile and link that generate the errors listed. Also a small reproducer would be helpful. As with most assistance requests, a list of the current version of the OS and compiler would be nice.
REX_LIB:REX /library
SQL$USER /library
%LINK-W-MULDEF, symbol DECC$REALLOC multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$MALLOC multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$CALLOC multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$CFREE multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
%LINK-W-MULDEF, symbol DECC$FREE multiply defined
in module DECC$SHR_EV56 file SYS$COMMON:[SYSLIB]DECC$SHR_EV56.EXE;1
============================================================================
You are not getting that message when compiling, you are getting it when you are linking, which are quite different operations.
One of your programs that you are linking has routines named "realloc", "malloc", "cfree", "free" with the same names as ones that are in the C Runtime library.
That is a bug.
If you are replacing a standard C library routine, you have to give it a different name such as "my_realloc", and then use a pre-processor macro like #define realloc my_realloc after the header file that declares the macro.
The symbols involved indicate those are some of the routines for allocating and deallocating memory from the heap, and typically replacements are used to try to diagnose heap corruption issues.
As these are not a complete set of routines that are known to return pointers to memory allocated from the heap, even if you get the symbols correct, the routines may still not give you the information that you need.
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ECC$SHR_EV56"