c++ - 无效的 clang 消毒剂选项

Question

我在 Clang 中使用 clang sanitizer。

下面的命令从链接复制到官方文档： http: //llvm.org/releases/3.7.0/tools/clang/docs/SanitizerCoverage.html

$ clang++ -g cov.cc -fsanitize=address -fsanitize-coverage=bb

但是，它给了我下面的错误消息

clang-3.7: error: invalid value 'bb' in '-fsanitize-coverage=bb'

我bb在上面更改为edge或func但它们都不起作用，而上面的链接说：

SanitizerCoverage can be used with AddressSanitizer, LeakSanitizer, MemorySanitizer, and UndefinedBehaviorSanitizer. In

除了 -fsanitize=，还传递以下编译时标志之一：

    -fsanitize-coverage=func for function-level coverage (very fast).
    -fsanitize-coverage=bb for basic-block-level coverage (may add up to 30% extra slowdown).
    -fsanitize-coverage=edge for edge-level coverage (up to 40% slowdown).

我正在使用 Ubuntu 14。