chore: support AddressSanitizer (ASan)

Summary

• chore: support AddressSanitizer (ASAN)

This adds support for ASAN both in rust code and core tarantool. To build with ASAN, simply run

# Build with --profile=asan and a few more special flags...
make build-asan

Keep in mind that ASAN-enabled executable lives in

target/x86_64-unknown-linux-gnu/asan/picodata

as opposed to

target/debug/picodata

Further reading

• https://github.com/japaric/rust-san
• https://github.com/rust-lang/cargo/issues/6375#issuecomment-444900324
• https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/sanitizer.html

Demos

diff --git a/src/main.cc b/src/main.cc
index f8938e68b..74f4cfc9e 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -638,10 +638,14 @@ print_help(const char *program)
 	puts("to see online documentation, submit bugs or contribute a patch.");
 }
 
+static char volatile bytes[4];
+
 extern "C"
 int
 tarantool_main(int argc, char **argv, void (*cb)(void *), void *cb_data)
 {
+	*(volatile char * volatile)(&bytes[5]);
+
 	// Picodata forks the process and only the child runs tarantool_main.
 	// Therefore master_pid must be set here instead of the static memory,
 	// so that the resources are cleaned up at the end

diff --git a/src/cli/run.rs b/src/cli/run.rs
index eff78f69..987b191a 100644
--- a/src/cli/run.rs
+++ b/src/cli/run.rs
@@ -125,6 +125,9 @@ pub fn main(args: args::Run) -> ! {
                         std::process::exit(1);
                     }));
 
+                    let xs = [0, 1, 2, 3];
+                    let y = unsafe { *xs.as_ptr().offset(4) };
+
                     // Note that we don't really need to pass the `config` here,
                     // because it's stored in the global variable which we can
                     // access from anywhere. But we still pass it explicitly just

---

• Close #...
• Cherry-pick to: none / 24.4 / 24.3 / 24.2
• Docs follow-up: not necessary / new issue

Ref: picodata/tarantool!191

Ref: picodata/tarantool!208

Ref: #380