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Specifically, don't print snippets, caret diagnostics, or ranges for
lines over 4096 characters. We copy the line around a few times in our
diagnostics machinery, and we have to print a caret line that's just as
long. This uses a lot of memory just to create a poor user experience as
we print out a line much too long for anyone to read...or spend extra
energy trying to fit it to -fmessage-length.
<rdar://problem/13106850>
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This reverts commit r173952
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to printing the default case. This is a fix for PR15023.
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a test case.
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This caused hangs as we processed the same invalid byte over and over.
<rdar://problem/13115651>
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Redefine the shallow mode to inline all functions for which we have a
definite definition (ipa=inlining). However, only inline functions that
are up to 4 basic blocks large and cut the max exploded nodes generated
per top level function in half.
This makes shallow faster and allows us to keep inlining small
functions. For example, we would keep inlining wrapper functions and
constructors/destructors.
With the new shallow, it takes 104s to analyze sqlite3, whereas
the deep mode is 658s and previous shallow is 209s.
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for "#define X X".
This is a pattern that, for example, stdbool.h uses.
rdar://12435773
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This is faster for the analyzer to process than inlining the constructor
and performing a member-wise copy, and it also solves the problem of
warning when a partially-initialized POD struct is copied.
Before:
CGPoint p;
p.x = 0;
CGPoint p2 = p; <-- assigned value is garbage or undefined
After:
CGPoint p;
p.x = 0;
CGPoint p2 = p; // no-warning
This matches our behavior in C, where we don't see a field-by-field copy.
<rdar://problem/12305288>
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Fix is being discussed on cfe-dev.
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__fp16 isn't covered by the standard, but this resolves the oddity that float
gets promoted when passed variadically, but not the smaller type. This is
required by the AArch64 ABI, and a sane action elsewhere.
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an Objective-C method. Fixes <rdar://problem/13069990>.
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can be messaged via the metaclass. Provide code completions for this
case. Fixes <rdar://problem/12560296>.
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an attribute for consistency with our other noreturn mechanisms.
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Summary:
A motivating example:
class ClassWithDtor {
public:
~ClassWithDtor() {}
};
void fallthrough3(int n) {
switch (n) {
case 2:
do {
ClassWithDtor temp;
return;
} while (0); // This generates a chain of unreachable CFG blocks.
case 3:
break;
}
}
Reviewers: rsmith, doug.gregor, alexfh
Reviewed By: alexfh
CC: cfe-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D330
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unresolved using declarations. Fixes PR14768 / <rdar://problem/13030296>.
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People use the C preprocessor for things other than C files. Some of them
have Unicode characters. We shouldn't warn about Unicode characters
appearing outside of identifiers in this case.
There's not currently a way for the preprocessor to tell if it's in -E mode,
so I added a new flag, derived from the PreprocessorOutputOptions. This is
only used by the Unicode warnings for now, but could conceivably be used by
other warnings or even behavioral differences later.
<rdar://problem/13107323>
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Suggested in post-commit review by Richard Smith.
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If the member has an initializer, assume it was probably intended to be static
and suggest/recover with that.
If the member doesn't have an initializer, assume it was probably intended to
be const instead of constexpr and suggest that.
(if the attempt to apply these changes fails, don't make any suggestion &
produce the same diagnostic experience as before. The only case where this can
come up that I know of is with a mutable constexpr with an initializer, since
mutable is incompatible with static (but it's already incompatible with
const anyway))
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argument to be memset, check for its type to be complete
before calling Context.getTypeSize(PointeeTy) to prevent
crash. // rdar://13081751.
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"tmpkcfdld".
If we had the regular expression "\b" in FileCheck like Perl...
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references to their UTIF-8 encoding. Reviewed offline by Doug.
// rdar://12392215
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implementation; this is much more inline with the original implementation
(i.e., pre-ubsan) and does not require run-time library support.
The trapping implementation can be invoked using either '-fcatch-undefined-behavior'
or '-fsanitize=undefined-trap -fsanitize-undefined-trap-on-error', with the latter
being preferred. Eventually, the -fcatch-undefined-behavior' flag will be removed.
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to change variables locally.
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Fix to change r173414 that lead to Clang changing const to constexpr even under
-Wno-static-float-init.
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if they were already concatenated in source using the spelling locations
even if they came from a macro expansion.
This fixes an issue where a GUID passed as macro argument ends up
malformed after preprocessing because we added spaces inside it.
rdar://13016645
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subsequent commands from being executed.
The diagnostics generation isn't designed for this use case, so add a note to
fix this in the very near future. For now, just generated the diagnostics for
the first failing command.
Part of rdar://12984531
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TopLevelDeclInObjCContainer bit.
Fixes accurately getting a cursor inside an objc container containing a struct definition,
from a PCH/preamble file.
rdar://12584613
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Also refactor the surrounding code a little.
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C++11 allows that.
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the diagnostic's warn_ name. Switch some places (notably C++11 attributes)
which really wanted an error over to a different diagnostic. Finally, suppress
the diagnostic entirely for __ptr32, __ptr64 and __w64, to avoid producing
diagnostics in important system headers.
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instantiation.
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It turns out that there's no correctness bug here (because we can't have a type
definition in this location), but there was a diagnostic bug.
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forms of 'main' which we accept as an extension.
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pretty-print them properly (modulo the more general badness in alignment
attribute printing).
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working, and add the missing attribute spellings. This brings _pascal,
_fastcall, _stdcall and _cdecl to life in -fborland-extensions mode.
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decidedly non-reference, non-pointer type. Fixes <rdar://problem/13090123>.
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