forked from OSchip/llvm-project
ba101e1b3b
If 'x' is a temporary, x.getAs<Foo>() may not be safe if the result is supposed to persist (if its address is stored somewhere). Since getAs() can return a null value, the result is almost always stored into a variable, which of course is not safe when the original value dies. This has caused several bugs with GCC's "Temporaries May Vanish Sooner Than You Expect" optimization; in C++11 builds, at least, we'll be able to catch these problems now. I would suggest applying these to other getAs() and get*As() methods (castAs is "better" because sometimes the result is used directly, which means the temporary will still be live), but these two have both caused trouble in the analyzer in the past. llvm-svn: 168967 |
||
|---|---|---|
| clang | ||
| clang-tools-extra | ||
| compiler-rt | ||
| debuginfo-tests | ||
| libclc | ||
| libcxx | ||
| libcxxabi | ||
| lld | ||
| lldb | ||
| llvm | ||
| polly | ||