What Every C Programmer Should Know About Undefined Behavior #1/3

What Every C Programmer Should Know About Undefined Behavior #1/3 People occasionally ask why LLVM-compiled code sometimes generates SIGTRAP signals when the optimizer is turned on. After digging in, they find that Clang generated a "ud2" instruction (assuming X86 code) - the same as is generated by __builtin_trap(). There are several issues at work here, all centering around undefined behavior in

[komz]

What Every C Programmer Should Know About Undefined Behavior #1/3

[efcl]

C言語の未定義の動作

[rjj]

読んだ。より良いwarningを出すためにコンパイラの中でコード変形フローをトラックする仕組みがいるな・・・。

[legoboku]

すべてのCプログラマが知っているべき未定義の振る舞いについて

[masami256]

今度読む

[fcicq]

reviewed on 2013.2. see http://blog.regehr.org/archives/213

[naruoga]

LWN.netより。三回シリーズらしいがなかなか面白い。続きに期待。ま、ぼくプログラマじゃないけど。