dereferencing

i get the following error while building the toolchain src/gcc-4.0-20060817/libiberty/regex.c:8242: error: dereferencing pointer to incomplete type /src/gcc-4.0-20060817/libiberty/regex.c:8243: error: dereferencing pointer to incomplete type /src/gcc-4.0-20060817/libiberty/regex.c:8244...