After last boost update got: ld-elf.so.1: Shared object "libboost_regex.so.1.70.0" not found, required by "gdb" Rebuild and reinstall gdb fixes proublem.
Needs bump of portrevision.
(In reply to Walter Schwarzenfeld from comment #1) There is no boost dep in make file.
indirect: pkg info -d source-highlight source-highlight-3.1.8_8: indexinfo-0.3.1 boost-libs-1.71.0
Probably need add boost to LIB_DEPEND to gdb Makefile to keep this.
IMHO, gdb linked with libboost_regex.so. If it is not true than close this as noabug/wontfix.