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Improve error messages on assertion failure.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@821 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-10-15 13:13:32 +00:00
parent f84b9bc33b
commit 2a72820b43
1 changed files with 6 additions and 2 deletions
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8
include/llvm/Value.h
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@ -188,7 +188,10 @@ template <class X> class real_type <class UseTy<X> > { typedef X *Type; };
// if (isa<Type>(myVal)) { ... }
//
template <class X, class Y>
inline bool isa(Y Val) { return X::classof(Val); }
inline bool isa(Y Val) {
assert(Val && "isa<Ty>(NULL) invoked!");
return X::classof(Val);
}
// cast<X> - Return the argument parameter cast to the specified type. This
@ -201,7 +204,8 @@ inline bool isa(Y Val) { return X::classof(Val); }
//
template <class X, class Y>
inline X *cast(Y Val) {
assert((Val == 0 || isa<X>(Val)) && "Invalid cast argument type!");
assert((Val == 0 || isa<X>(Val)) &&
"cast<Ty>() argument of uncompatible type!");
return (X*)(real_type<Y>::Type)Val;
}