alloc

I am trying to get our database interface (PADI) working with R. The code does
some memory allocation and for Splus there is an ifdef which controls whether
malloc or S_alloc is called. I did  nm R.binary | grep alloc to see if this was
supported and I find there are some choices:
[2490] |    446036|     272|FUNC |GLOB |0    |7      |R_alloc
[806] |    693956|     312|FUNC |LOCL |0    |7      |ReallocString
[807] |    693220|     736|FUNC |LOCL |0    |7      |ReallocVector
[3444] |    446308|     144|FUNC |GLOB |0    |7      |S_alloc
[2429] |    446452|     200|FUNC |GLOB |0    |7      |S_realloc
...
[2204] |   1445856|       0|FUNC |GLOB |0    |UNDEF  |calloc
[2595] |   1444644|       0|FUNC |GLOB |0    |UNDEF  |malloc
[3066] |   1444728|       0|FUNC |GLOB |0    |UNDEF  |realloc
...
Is there any advantage to calling R_alloc rather than S_alloc? I also see that
malloc is UNDEF. Now I'm not a C programmer, but I have a funny feeling that
this could lead to some problems?

Paul Gilbert

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