This reverts commit r193161.
It broke
void foo() __attribute__((alias("bar")));
void bar() {}
void zed() __attribute__((alias("foo")));
Looks like we have to fix pr17639 first :-(
llvm-svn: 193162
names. For example, with this patch we now reject
void f1(void) __attribute__((alias("g1")));
This patch is implemented in CodeGen. It is quiet a bit simpler and more
compatible with gcc than implementing it in Sema. The downside is that the
errors only fire during -emit-llvm.
llvm-svn: 193161
If we run into the second preprocessor branch chain, the first branch
chain might have already set the maximum branch count on that level to
something > 0.
Fixes PR17645.
llvm-svn: 193153
This patch changes two things:
a) Allow a header to be part of multiple modules. The reasoning is that
in existing codebases that have a module-like build system, the same
headers might be used in several build targets. Simple reasons might be
that they defined different classes that are declared in the same
header. Supporting a header as a part of multiple modules will make the
transistion easier for those cases. A later step in clang can then
determine whether the two modules are actually compatible and can be
merged and error out appropriately. The later check is similar to what
needs to be done for template specializations anyway.
b) Allow modules to be stored in a directory tree separate from the
headers they describe.
Review: http://llvm-reviews.chandlerc.com/D1951
llvm-svn: 193151
Summary:
Enforce the rule in C++11 [temp.mem]p2 that local classes cannot have
member templates.
This fixes PR16947.
N.B. C++14 has slightly different wording to afford generic lambdas
declared inside of functions.
Fun fact: Some formulations of local classes with member templates
would cause clang to crash during Itanium mangling, such as the
following:
void outer_mem() {
struct Inner {
template <typename = void>
struct InnerTemplateClass {
static void itc_mem() {}
};
};
Inner::InnerTemplateClass<>::itc_mem();
}
Reviewers: eli.friedman, rsmith, doug.gregor, faisalv
Reviewed By: doug.gregor
CC: cfe-commits, ygao
Differential Revision: http://llvm-reviews.chandlerc.com/D1866
llvm-svn: 193144
Summary:
Refactor DynTypedMatcher into a value type class, just like Matcher<T>.
This simplifies its usage and removes the virtual hierarchy from Matcher<T>.
It also enables planned changes to replace MatcherInteface<T>.
Too many instantiaions of this class hierarchy has been causing Registry.cpp.o to bloat in size and number of symbols.
Reviewers: klimek
CC: cfe-commits, revane
Differential Revision: http://llvm-reviews.chandlerc.com/D1661
llvm-svn: 193100
Due to statement expressions supported as GCC extension, it is possible
to put 'break' or 'continue' into a loop/switch statement but outside its
body, for example:
for ( ; ({ if (first) { first = 0; continue; } 0; }); )
Such usage must be diagnosed as an error, GCC rejects it. To recognize
this and similar patterns the flags BreakScope and ContinueScope are
temporarily turned off while parsing condition expression.
Differential Revision: http://llvm-reviews.chandlerc.com/D1762
llvm-svn: 193073
Now that we iterate on the formatting multiple times when we
have chains of preprocessor branches, we need to correctly reset
the token's previous and next pointer for the first / last token.
llvm-svn: 193071
The C and C++ standards disallow using universal character names to
refer to some characters, such as basic ascii and control characters,
so we reject these sequences in the lexer. However, when the
preprocessor isn't being used on C or C++, it doesn't make sense to
apply these restrictions.
Notably, accepting these characters avoids issues with unicode escapes
when GHC uses the compiler as a preprocessor on haskell sources.
Fixes rdar://problem/14742289
llvm-svn: 193067
This uses function prefix data to store function type information at the
function pointer.
Differential Revision: http://llvm-reviews.chandlerc.com/D1338
llvm-svn: 193058
ResolveSingleFunctionTemplateSpecialization() returns 0 and doesn't emit diags
unless the expression has template-ids, so we must null check the result.
Also add a better diag noting which overloads are causing the problem.
Reviewed by Aaron Ballman.
llvm-svn: 193055
Before:
DEBUG({ // Comment that used to confuse clang-format.
fdafas();
});
Before:
DEBUG({ // Comments are now fine.
fdafas();
});
This fixed llvm.org/PR17619.
llvm-svn: 193051
Before (note the missing space before "..." which can lead to compile
errors):
switch (x) {
case 'A'... 'Z':
case 1... 5:
break;
}
After:
switch (x) {
case 'A' ... 'Z':
case 1 ... 5:
break;
}
llvm-svn: 193050
This fixes PR17591.
N.B. This actually goes beyond what the standard mandates by requiring
the restriction to hold for declarations instead of definitions. This
is believed to be a defect in the standard and an LWG issue has been
submitted.
llvm-svn: 193044
* NamedDecl and CXXMethodDecl were missing getMostRecentDecl.
* The const version can just forward to the non const.
* getMostRecentDecl can use cast instead of cast_or_null.
This then removes some casts from the callers.
llvm-svn: 193039
Now that CorrectTypo knows how to correctly search classes for typo
correction candidates, there is no good reason to only replace an
existing CXXScopeSpecifier if it refers to a namespace. While the actual
enablement was a matter of changing a single comparison, the fallout
from enabling the functionality required a lot more code changes
(including my two previous commits).
llvm-svn: 193020
Before, clang-format would not adjust leading indents if it found a
structural error (e.g. unmatched {}). It seems, however, that
clang-format has gotten good enough at parsing the code structure that
this hurts in almost all cases. Commonly, while writing code, it is
very useful to be able to correclty indent incomplete if statements or
for loops.
In case this leads to errors that we don't anticipate, we need to find
out and fix those.
This fixed llvm.org/PR17594.
llvm-svn: 192988
This looks ugly and leads to llvm.org/PR17590.
Before (with AlwaysBreakBeforeMultilineStrings):
return
"aaaa"
"bbbb";
After:
return "aaaa"
"bbbb";
llvm-svn: 192984
Daniel Jasper