Function debug_resolve_binary

src/debug.cpp:826–858

}

static std::string debug_resolve_binary( const std::string &binary, std::ostream &out )
{
    if( binary.find( '/' ) != std::string::npos ) {
        // The easy case, where we have a path to the binary
        return binary;
    }
    // If the binary name has no slashes then it was found via PATH
    // lookup, and we need to do the same to pass the correct name
    // to addr2line.  An alternative would be to use /proc/self/exe,
    // but that's Linux-specific.
    // Obviously this will not work in all situations, but it will
    // usually do the right thing.
    const char *path = std::getenv( "PATH" );
    if( !path ) {
        // Should be impossible, but I want to avoid segfaults
        // in the crash handler.
        out << "    backtrace: PATH not set\n";
        return binary;
    }

    std::string suffix = "/" + binary;
    for( const std::string &path_elem : string_split( path, ':' ) ) {
        if( path_elem.empty() ) {
            continue;
        }
        std::string candidate = path_elem + suffix;
        if( 0 == access( candidate.c_str(), X_OK ) ) {
            return candidate;
        }
    }

    return binary;
}

static cata::optional<uintptr_t> debug_compute_load_offset(
    const std::string &binary, const std::string &symbol,