Known Bugs and Workarounds

• 3/5/96: The LD code uses the Standard C library functions malloc and calloc to allocate temporary memory for some of the internal data structures. This temporary memory may (correctly) be of size 0 under certain circumstances. The SunOS versions of malloc and calloc will still return a non-NULL pointer (that should not be dereferenced and must be freed as well). LD uses this feature of SunOS to avoid special-casing data structures of size 0. The standard C library of other operating systems (notably Linux) may not correctly implement this memory allocation feature. A simple workaround is to add a constant to these memory allocations (line 458 in disk.c and line 555 in recovery.c). Thanks to Todd Rudick for bringing this problem to our attention.