glibc/sysdeps/generic/localplt.data

# See scripts/check-localplt.awk for how this file is processed.
# PLT use is required for the malloc family and for matherr because
# users can define their own functions and have library internals call them.
libc.so: calloc
libc.so: free
libc.so: malloc
libc.so: memalign
libc.so: realloc
libm.so: matherr
# The main malloc is interposed into the dynamic linker, for
# allocations after the initial link (when dlopen is used).
ld.so: malloc
ld.so: calloc
ld.so: realloc
ld.so: free
# The TLS-enabled version of these functions is interposed from libc.so.
ld.so: _dl_signal_error
ld.so: _dl_catch_error
ld.so: _dl_signal_exception
ld.so: _dl_catch_exception