🚀 go-pugleaf

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machine used:  SPARCstation 2
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g++ version used:
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% g++ -v -S bug.c
Reading specs from /usr/local/lib/gcc-lib/sun4/2.1/specs
gcc version 2.1
 /usr/local/lib/gcc-lib/sun4/2.1/cpp -lang-c++ -v -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus -Dsparc -Dsun -Dunix -D__sparc__ -D__sun__ -D__unix__ -D__sparc -D__sun -D__unix bug.c /usr/tmp/cca15524.i
GNU CPP version 2.1 (sparc)
 /usr/local/lib/gcc-lib/sun4/2.1/cc1plus /usr/tmp/cca15524.i -quiet -dumpbase bug.cc -version -o bug.s
GNU C++ version 2.1 (sparc) compiled by GNU C version 2.1.
%


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source code:
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class   C
{
public:
        int     i0;
        int     i1;
};


typedef         int C::*        PMC;


int     j;


void
f ()
{
    PMC  pmc = &C::i1;
    C   c;
    C* cp = &c;
    j = cp->*pmc;		// problem occurs here
}


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produced assembly code:
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gcc2_compiled.:
.text
        .align 4
        .global _f__Fv
        .proc 1
_f__Fv:
        !#PROLOGUE# 0
        save %sp,-136,%sp
        !#PROLOGUE# 1
        mov 4,%o0
        st %o0,[%fp-20]
        add %fp,-32,%o0
        st %o0,[%fp-36]
        sethi %hi(_j),%o0
        ld [%fp-20],%o1
        ld [%fp-36],%o2
        ld [%o1],%o3		// memory(0x0004) is accessed here
        add %o2,%o3,%o1
        ld [%o1],%o2
        st %o2,[%o0+%lo(_j)]
        b,a L2
        b,a L1
L2:
L1:
        ret
        restore
        .global _j
        .common _j,8,"bss"