SPI_repalloc — reallocate memory in the upper executor context
void * SPI_repalloc(void *pointer, Sizesize)
   SPI_repalloc changes the size of a memory
   segment previously allocated using SPI_palloc.
  
   This function is no longer different from plain
   repalloc.  It's kept just for backward
   compatibility of existing code.
  
void * pointerpointer to existing storage to change
Size sizesize in bytes of storage to allocate
pointer to new storage space of specified size with the contents copied from the existing area