As PBC files might be built from different core.ops aka core_ops.c, it is necessary to add a fingerprint to PBC files, to validate, that the interpreter uses the very same ops, when running the PBC.
- during "make" a fingerprint of core_ops.c is generated: $ perl -pe's/\s//g' < core_ops.c | md5sum | cut -f1 -d' ' [1] 305c25a0a3fe675f7fdc5d323020eae2 - assemble.pl/packfile.c/packout.c #include this checksum - assemble.pl / imcc incorporate[2] this checksum in the PBC - packfile.c verifies it during loading the PBC. [1] replaced by Digest::MD5 for portability [2] a) increase the PackFile_Header by 16 or 32 bytes or b) write this as a STRING into the first PackFile_Constant Comments welcome, leo
