nested-name-specifiers throughout the parser, and provide a new class
(NestedNameSpecifierLoc) that contains a nested-name-specifier along
with its type-source information.
Right now, this information is completely useless, because we don't
actually store the source-location information anywhere in the
AST. Call this Step 1/N.
llvm-svn: 126391
Add an interface for last resort, unqualified lookup. It can provide results for unqualified lookup when Sema fails to find anything itself.
llvm-svn: 126387
way it keeps track of namespaces. Previously, we would map from the
namespace alias to its underlying namespace when building a
nested-name-specifier, losing source information in the process.
llvm-svn: 126358
with another component in the nested-name-specifiers, updating its
representation (a NestedNameSpecifier) and source-location information
(currently a SourceRange) simultaneously. This is groundwork for
adding source-location information to nested-name-specifiers.
llvm-svn: 126346
expressions. Consider the code:
int64_t i = 10 << 30;
This compiles fine, but most developers expect it to produce the value
for 10 gigs, not -2 gigs. This is actually undefined behavior because
the LHS is a signed integer type.
The warning is currently gated behind -Wshift-overflow.
There is a special case where only the sign bit is overridden that gets
a custom error message and is by default ignored. This case is much less
likely to cause observed buggy behavior, it's just undefined behavior
according to the spec. This warning can be enabled with
-Wshift-sign-overflow.
Original patch by Oleg Slezberg, with style tweaks and some correctness
fixes by me.
llvm-svn: 126342
several ways. We now warn for more of the return types, and correctly
locate the ignored ones. Also adds fix-it hints to remove the ignored
qualifiers. Fixes much of PR9058, although not all of it.
Patch by Hans Wennborg, a couple of minor style tweaks from me.
llvm-svn: 126321
diagnostics that occur in unreachable code (e.g., -Warray-bound).
We only pay the cost of doing the reachability analysis when we issue one of these diagnostics.
llvm-svn: 126290
* 'auto' was being rejected on abstract-declarators with trailing return
types and on typedefs with trailing return types. 'auto' is always
allowed in these cases. This was found while testing the fix for PR 9278.
* A very poor diagnostic was being issued for auto (f() -> int): "return
type must be 'auto', not 'auto'". This is closely related to PR 9060.
* Trailing return type handling was happening slightly too late,
resulting in the checks for functions returning arrays and functions
returning functions being missed.
llvm-svn: 126166
This actually rules out too much, since it also catches typedefs for pointers to functions with trailing return types:
typedef auto (*F)() -> int;
Fix for that (and the same issue in all abstract-declarators) to follow shortly.
llvm-svn: 126153
When the mismatch is due to a larger input operand that is
a constant, truncate it down to the size of the output. This
allows us to accept some cases in the linux kernel and elsewhere.
Pedantically speaking, we generate different code than GCC, though
I can't imagine how it would matter:
Clang:
movb $-1, %al
frob %al
GCC:
movl $255, %eax
frob %al
llvm-svn: 126148
* Flag indicating 'we're parsing this auto typed variable's initializer' moved from VarDecl to Sema
* Temporary template parameter list for auto deduction is now allocated on the stack.
* Deduced 'auto' types are now uniqued.
llvm-svn: 126139
initializers just because they don't have a proper out-of-line definition.
Such code is technically ill-formed but is too common and too unlikely to be
a problem to be seriously worth worrying about.
llvm-svn: 126137
appropriate attribute. Add a bit more testing that finds a pretty bad
regression (since ~forever) in this warning. Fix it with a nice 2 line
change. =]
llvm-svn: 126098
designators: allowing codegen when the element initializer is a
constant or something else without a side effect. This unblocks
enough to let process.c in the linux kernel build, PR9257.
llvm-svn: 126056
includes explicitly-specified template arguments) to a function
template specialization in cases where no deduction is performed or
deduction fails. Patch by Faisal Vali, fixes PR7505!
llvm-svn: 126048
current instantiation, even though we have a RecordDecl describing
them. Fixes PR9255.
Amusingly, I've had this patch sitting around for a month or two
because it was "obviously" wrong, but hadn't gotten around to writing
a test case to submit the fix :)
llvm-svn: 126038
warn about polymorphic classes (which have virtual functions) rather
than dynamic classes (which are polymorphic or have virtual bases).
llvm-svn: 126036
Douglas Gregor