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Don't crash when forming a destructor name on an incomplete type.

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Fixes PR25156.

Patch by Don Hinton!

llvm-svn: 305169
This commit is contained in:
John McCall 2017-06-11 20:33:00 +00:00
parent dcfc0413ab
commit cb731548fa
2 changed files with 13 additions and 3 deletions
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9
clang/lib/Sema/SemaExprCXX.cpp
View File

@ -189,12 +189,15 @@ ParsedType Sema::getDestructorName(SourceLocation TildeLoc,
// have one) and, if that fails to find a match, in the scope (if
// we're allowed to look there).
Found.clear();
if (Step == 0 && LookupCtx)
if (Step == 0 && LookupCtx) {
if (RequireCompleteDeclContext(SS, LookupCtx))
return nullptr;
LookupQualifiedName(Found, LookupCtx);
else if (Step == 1 && LookInScope && S)
} else if (Step == 1 && LookInScope && S) {
LookupName(Found, S);
else
} else {
continue;
}
// FIXME: Should we be suppressing ambiguities here?
if (Found.isAmbiguous())

7
clang/test/SemaCXX/nested-name-spec.cpp
View File

@ -169,6 +169,13 @@ void N::f() { } // okay
struct Y; // expected-note{{forward declaration of 'Y'}}
Y::foo y; // expected-error{{incomplete type 'Y' named in nested name specifier}}
namespace PR25156 {
struct Y; // expected-note{{forward declaration of 'PR25156::Y'}}
void foo() {
Y::~Y(); // expected-error{{incomplete type 'PR25156::Y' named in nested name specifier}}
}
}
X::X() : a(5) { } // expected-error{{use of undeclared identifier 'X'}}
struct foo_S {