Commit Graph

8 Commits

Author SHA1 Message Date
Haojian Wu 89d9912cbf [AST] dont invaliate VarDecl when the initializer contains errors.
Summary:
This patch contains 2 separate changes:
1) the initializer of a variable should play no part in decl "invalid" bit;
2) preserve the invalid initializer via recovery exprs;

With 1), we will regress the diagnostics (one big regression is that we loose
the "selected 'begin' function with iterator type" diagnostic in for-range stmt;
but with 2) together, we don't have regressions (the new diagnostics seems to be
improved).

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78116
2020-04-21 10:53:35 +02:00
Hal Finkel fec8345108 Adjust type-trait evaluation to properly handle Using(Shadow)Decls
Since r274049, for an inheriting constructor declaration, the name of the using
declaration (and using shadow declaration comes from the using declaration) is
the name of a derived class, not the base class (line 8225-8232 of
lib/Sema/SemaDeclCXX.cpp in https://reviews.llvm.org/rL274049). Because of
this, name-based lookup performed inside Sema::LookupConstructors returns not
only CXXConstructorDecls but also Using(Shadow)Decls, which results assertion
failure reported in PR29087.

Patch by Taewook Oh, thanks!

Differential Revision: https://reviews.llvm.org/D23765

llvm-svn: 287999
2016-11-27 16:26:14 +00:00
Kaelyn Takata 3587fff95e Fix a crash when the size of an 'auto' is needed and its initalizer
contained a typo correction (the auto decl was being marked as dependent
unnecessarily, which triggered an assertion in cases where the size of
the type is needed).

llvm-svn: 232568
2015-03-17 23:50:12 +00:00
Richard Smith 3249fed9b2 If we find an error in the range expression in a range-based for loop, and the
loop variable has a type containing 'auto', set the declaration to be invalid
(because we couldn't deduce its type) to prevent follow-on errors.

llvm-svn: 188853
2013-08-21 01:40:36 +00:00
Richard Smith 27d807cc9c Don't treat a non-deduced 'auto' type as being type-dependent. Instead, there
are now two distinct canonical 'AutoType's: one is the undeduced 'auto'
placeholder type, and the other is a deduced-but-dependent type. All
deduced-to-a-non-dependent-type cases are still non-canonical.

llvm-svn: 180789
2013-04-30 13:56:41 +00:00
Richard Smith 2f36dae5c0 When determining whether to try evaluating the initializer of a variable, check
whether the initializer is value-dependent rather than whether we are in a
dependent context. This allows us to detect some errors sooner, and fixes a
crash-on-invalid if a dependent type leaks out to a non-dependent context in
error recovery.

llvm-svn: 166898
2012-10-28 06:18:02 +00:00
Argyrios Kyrtzidis 668bf82658 Add a test case for the stack overflow in rdar://12542261
llvm-svn: 166858
2012-10-27 02:13:28 +00:00
Argyrios Kyrtzidis 8e50297652 Fix stack overflow when trying to create an implicit moving
constructor with invalid code.

rdar://12240916

llvm-svn: 165623
2012-10-10 16:14:06 +00:00