mapfile use check in jdk/make/common/shared/Defs-solaris.gmk is throwing 'egrep: syntax error'

Evaluating the 'if [...]' line in the code snippet below seems to be throwing an error, on Solaris at least:

cat -n jdk/make/common/shared/Defs-solaris.gmk


   217 # Macro to check it's input file for banned dependencies and verify the
   218 # binary built properly. Relies on process exit code.
   219 ifndef CROSS_COMPILE_ARCH
   220 define binary_file_verification # binary_file
   221 ( \
   222 $(ECHO) "Checking for mapfile use in: $1" && \
   223 if [ "`$(ECHO) $(basename $(notdir $1)) | $(EGREP) '$(MAPFILE_EXCEPTIONS)'`" = "" \
   224 -a "`$(NM) -g -D $1 | $(EGREP) -v 'UNDEF' | $(EGREP) 'SUNWprivate'`" = "" ] ; then \
   225 $(ECHO) "$(MAPFILE_WARNING): File was not built with a mapfile: $1"; \
   226 fi && \
   227 $(ECHO) "Library loads for: $1" && \
   228 $(LDD) $1 && \
   229 $(ECHO) "RUNPATH for: $1" && \
   230 ( $(DUMP) -L -v $1 | $(EGREP) 'NEEDED|RUNPATH|RPATH' ) \
   231 )


Examples I noticed in the build log:


Checking for mapfile use in: ../../../build/solaris-amd64/lib/amd64/server/libjvm.so
egrep: syntax error

[...]

Checking for mapfile use in: ../../build/solaris-amd64/bin/amd64/keytool
egrep: syntax error

[...]



Refer to the attached build log for more.