[avr-gcc-list] fdevopen() uses calloc?

[J.C. Wren]

fdevopen() is using calloc(), which pulls in a lot of extra code.  Is 
there any reason this couldn't use a static, instead? 

I wrote my own fdevopen function (slightly different name), but the 
linker is still pulling in fdevopen(), even though I can find no 
references to it.  Why would this be?  If I name my function fdevopen(), 
the linker gets all whiney about the size changing between my .o file 
and the libc file. 

To write mine, I had to cheat and copy over stdio_private.h, which is a 
major hack.  What I'd like is an fdevopen() variant that allows passing 
a user provided block of memory.  Unfortunately, this has to be of size 
FILE, which is opaque, so we don't know how large a block of memory to 
declare. 

In lieu of fdevopen() using a static buffer, can fdevopen() be a weak 
reference so at least overriding it doesn't cause the compiler to get upset?

   --jc