The Go language does not have destructors. Instead, it has two more dynamic mechanisms. A defer statement may be used to run a function on function exit or when processing a panic. A finalizer may be used to run a function when the garbage collector finds that a block of memory has [...]
I recently ran the gold linker under Thread Sanitizer. It’s a nice plugin for Valgrind which looks for race conditions in multi-threaded programs. To describe it briefly, it builds Happens-Before relationships based on mutex operations and warns when it notices a write and a read/write to the same memory location without a Happens-Before [...]
All Go code lives in a package. Every Go source file starts with a package declaration which names the package that it lives in. A package name is a simple identifier; besides appearing in a package clause, package names are also used when referring to names imported from another package. That poses [...]
Now for something really controversial: what’s wrong with protected symbols?
In an ELF shared library, an ordinary global symbol may be overridden if a symbol of the same name is defined in the executable or in a shared library which appears earlier in the runtime search path. This is called symbol interposition. It is [...]
I recently spent some time sorting through linker version script issues, so I’m going to document what I discovered.
Linker symbol versioning was invented at Sun. The Solaris linker lets you use a version script when you create a shared library. This script assigns versions to specific named symbols, and defines a version [...]