/usr/include/synfig-1.0/synfig/valuenodes/ is in libsynfig-dev 1.0.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_add.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_and.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_anglestring.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_animated.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_atan2.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_average.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_bline.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_blinecalctangent.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_blinecalcvertex.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_blinecalcwidth.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_blinereversetangent.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_bone.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_boneinfluence.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_bonelink.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_boneweightpair.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_compare.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_composite.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_const.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_cos.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_derivative.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_dilist.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_dotproduct.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_duplicate.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_dynamic.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_dynamiclist.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_exp.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_gradientcolor.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_gradientrotate.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_greyed.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_integer.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_intstring.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_join.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_linear.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_log.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_not.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_or.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_pow.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_radialcomposite.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_range.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_real.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_realstring.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_reciprocal.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_reference.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_repeat_gradient.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_reverse.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_scale.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_segcalctangent.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_segcalcvertex.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_sine.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_staticlist.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_step.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_stripes.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_subtract.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_switch.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_timedswap.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_timeloop.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_timestring.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_twotone.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_vectorangle.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_vectorlength.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_vectorx.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_vectory.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_weightedaverage.h
/usr/include/synfig-1.0/synfig/valuenodes/valuenode_wplist.h