HP MLIB for Itanium Linux Version 9.6.1 Release Note

Known Problems and Workarounds

HP MLIB for Itanium Linux Version 9.6.1 Release Note 17

SUBROUTINE XERBLA (SRNAME,INFO)

ENTRY XERBLA_ (SRNAME,INFO)

!DEC$ ATTRIBUTES ALIAS : 'xerbla' :: XERBLA

!DEC$ ATTRIBUTES ALIAS : 'xerbla_' :: XERBLA_

...

If the above syntax is rejected by the compiler, try using the following

SUBROUTINE XERBLA (SRNAME,INFO)

ENTRY XERBLA_ (SRNAME,INFO)

!DEC$ ALIAS : 'xerbla',XERBLA

!DEC$ ALIAS : 'xerbla_',XERBLA_

...

The ALIAS directives control the actual name generated for each entry point.

This should appear within the body of a program/function/subroutine before the first

executable statement.

Use the following workaround on Itanium®2-based processors if you are compiling your own

C version of XERBLA:

• Undefine any previous aliasing from include files and provide both xerbla and xerbla_

entry points explicitly.

#undef xerbla

#undef xerbla_

void xerbla (char*name, int*iarg, size_t len_name){

...

}

void xerbla_ (char*name, int*iarg, size_t len_name){

xerbla (name, iarg, len_name);

}

This problem is not confined to the XERBLA subroutine; it occurs on Itanium®2-based

systems when the following conditions are met:

• Any subprogram with the same name as a user-visible MLIB subprogram is compiled in

your program with -nus

• Another MLIB subprogram used by your program also calls that subprogram