rsync

[sim642]

https://github.com/RsyncProject/rsync/

Initial attempt

Goblint version: heads/master-0-gd505a38c7

Checked out git tag v3.4.1 and executed

./configure --disable-md2man --disable-xxhash --disable-zstd --disable-lz4 --disable-iconv --disable-iconv-open --disable-openssl --disable-acl-support --disable-xattr-support

Then in config.h manually commented out #define USE_MD5_ASM 1 and #define USE_ROLL_SIMD 1. There are only --enable options for these and they're enabled by default, so there doesn't seem to be a way to disable them (they use C++ and ASM).
Then executed

bear -- make rsync

Then in compile_commands.json manually did the following modifications:

1. Removed rounding.c. It's a helper program executed in the middle of the build to generate some header. Not sure why this isn't part of ./configure.
2. Removed simd-checksum-x86_64.cpp and md5-asm-x86_64.S. Even when defined to not be used, they're still compiled. But we don't want to try to merge them because parsing fails.
3. (Changed all -O2 arguments to -O0. Because -O2 disables fortified headers. Not actually necessary perhaps.)

Then executed

goblint compile_commands.json

but this doesn't yield to any result quickly.
I also tried

goblint compile_commands.json --set ana.base.strings.domain unit --enable exp.single-threaded

because a lot of the top functions in the solver stats are string/printing ones and rsync uses sigaction which makes Goblint analysis multi-threaded, but this didn't help.