tree a0efcd2a3e013a17f41b3b7610e07cde05ff058c
parent 585ba14df4799d50ec9682ce75825d2eafec2a6a
author Rich Felker <dalias@aerifal.cx> 1433432717 -0400
committer Rich Felker <dalias@aerifal.cx> 1433432717 -0400

fix dynamic linker regression processing R_*_NONE type relocations

commit f3ddd173806fd5c60b3f034528ca24542aecc5b9 inadvertently removed
the early check for "none" type relocations, causing the address
dso->base+0 to be dereferenced to obtain an addend. shared libraries,
(including libc.so) and PIE executables were unaffected, since their
base addresses are the actual address of their mappings and are
readable. non-PIE main executables, however, have a base address of 0
because their load addresses are absolute and not offset at load time.

in practice none-type relocations do not arise with toolchains that
are in use except on mips, and on mips it's moderately rare for a
non-PIE executable to have a relocation table, since the mips-specific
got processing serves in its place for most purposes.