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Another 4.3 c++ question.... (vmware kernel g++ module rebuild issue)



vmware module rebuild fails with kernel-2.6.25-0.35.rc1.fc9.i686 (and
gcc-c++-4.3.0-0.7.i386?).

The following code from <asm/page.h> compiles fine with gcc but not with g++:

typedef int pteval_t;

struct pte_t {
        pteval_t pte;
        int junk;
};

typedef struct pte_t pte_t;

static inline pte_t native_make_pte(pteval_t val)
{
        return (pte_t) { .pte = val };
}

[tbl localhost ~]$ g++ -S t.c
t.c: In function 'pte_t native_make_pte(pteval_t)':
t.c:12: error: expected primary-expression before ')' token
t.c:12: error: expected ';' before '{' token
t.c:12: error: expected primary-expression before '.' token
t.c:12: error: expected `;' before '}' token


Has 4.3 g++ changed the acceptability of the "designated initializer"
in the return?

Changing the "dot =" to (obsolete?) "colon" appears acceptable:

static inline pte_t native_make_pte(pteval_t val)
{
        return (pte_t) { pte:val };
}

There is a similar construct in <asm/paravirt.h> :

static inline pte_t __pte(pteval_t val)
{
        pteval_t ret;

        if (sizeof(pteval_t) > sizeof(long))
                ret = PVOP_CALL2(pteval_t,
                                 pv_mmu_ops.make_pte,
                                 val, (u64)val >> 32);
        else
                ret = PVOP_CALL1(pteval_t,
                                 pv_mmu_ops.make_pte,
                                 val);

        return (pte_t) { .pte = ret };
}

Changing to "colon" makes g++ happy.

This an issue with VMware? g++? headers? other?

tom
-- 
Tom London


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