diagnostics for bad deployment targets and adding a few
more predicates. Includes a patch by Jonathan Schleifer
to enable ARC for ObjFW.
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assembly.
By default, we don't emit IR for MS-style inline assembly (see r158833 as to
why). This is strictly for testing purposes and should not be enabled with the
expectation that things will work. This is a temporary flag and will be removed
once MS-style inline assembly is fully supported.
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This macro was being unconditionally set to zero, preceded by a FIXME comment.
This fixes <rdar://problem/11845441>. Patch by Michael Gottesman!
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For some reason GCC decided to call the feature rdrnd instead of rdrand,
which requires translating it for LLVM.
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- Split pedantic driver flag test into separate test file, and XFAIL on cygwin,mingw32
- Fix bug in tablegen logic where a missing '{' caused errors to be included in -Wpedantic.
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I suspect FileCheck might match assertion failure, even if clang/test/Misc/warning-flags.c passed the test.
> 0. Program arguments: bin/./clang -### -pedantic -Wpedantic clang/test/Driver/warning-options.cpp
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This patch introduces some magic in tablegen to create a "Pedantic" diagnostic
group which automagically includes all warnings that are extensions. This
allows a user to suppress specific warnings traditionally under -pedantic used
an ordinary warning flag. This also allows users to use #pragma to silence
specific -pedantic warnings, or promote them to errors, within blocks of text
(just like any other warning).
-Wpedantic is NOT an alias for -pedantic. Instead, it provides another way
to (a) activate -pedantic warnings and (b) disable them. Where they differ
is that -pedantic changes the behavior of the preprocessor slightly, whereas
-Wpedantic does not (it just turns on the warnings).
The magic in the tablegen diagnostic emitter has to do with computing the minimal
set of diagnostic groups and diagnostics that should go into -Wpedantic, as those
diagnostics that already members of groups that themselves are (transitively) members
of -Wpedantic do not need to be included in the Pedantic group directly. I went
back and forth on whether or not to magically generate this group, and the invariant
was that we always wanted extension warnings to be included in -Wpedantic "some how",
but the bookkeeping would be very onerous to manage by hand.
-no-pedantic (and --no-pedantic) is included for completeness, and matches many of the
same kind of flags the compiler already supports. It does what it says: cancels out
-pedantic. One discrepancy is that if one specifies --no-pedantic and -Weverything or
-Wpedantic the pedantic warnings are still enabled (essentially the -W flags win). We
can debate the correct behavior here.
Along the way, this patch nukes some code in TextDiagnosticPrinter.cpp and CXStoredDiagnostic.cpp
that determine whether to include the "-pedantic" flag in the warning output. This is
no longer needed, as all extensions now have a -W flag.
This patch also significantly reduces the number of warnings not under flags from 229
to 158 (all extension warnings). That's a 31% reduction.
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This flag sets the 'fp-contract' mode, which controls the formation of fused
floating point operations. Available modes are:
- Fast: Form fused operations anywhere.
- On: Form fused operations where allowed by FP_CONTRACT. This is the default
mode.
- Off: Don't form fused operations (in future this may be relaxed to forming
fused operations where it can be proved that the result won't be
affected).
Currently clang doesn't support the FP_CONTRACT pragma, so the 'On' and 'Off'
modes are equivalent.
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attached to a declaration in the completion string.
Since extracting comments isn't free, a new code completion option is
introduced.
A new code completion option that enables including brief comments
into CodeCompletionString should be a, err, code completion option.
But because ASTUnit caches global declarations during parsing before
even completion consumer is created, the option is duplicated as a
translation unit option (in both libclang and ASTUnit, like the option
to cache code completion results).
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In future changes we should:
* use __builtin_trap rather than derefing 'random' volatile pointers.
* avoid dumping temporary files into /tmp when running tests, instead
preferring a location that is properly cleaned up by lit.
Review by Chandler Carruth.
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comparison between two templated types when they both appear in a diagnostic.
Type elision will remove indentical template arguments, which can be disabled
with -fno-elide-type. Cyan highlighting is applied to the differing types.
For more formatting, -fdiagnostic-show-template-tree will output the template
type as an indented text tree, with differences appearing inline. Template
tree works with or without type elision.
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a bit further. We may wish to just have -Wno flags to silence warnings, and not have a -no-pedantic.
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target Objective-C runtime down to the frontend: break this
down into a single target runtime kind and version, and compute
all the relevant information from that. This makes it
relatively painless to add support for new runtimes to the
compiler. Make the new -cc1 flag, -fobjc-runtime=blah-x.y.z,
available at the driver level as a better and more general
alternative to -fgnu-runtime and -fnext-runtime. This new
concept of an Objective-C runtime also encompasses what we
were previously separating out as the "Objective-C ABI", so
fragile vs. non-fragile runtimes are now really modelled as
different kinds of runtime, paving the way for better overall
differentiation.
As a sort of special case, continue to accept the -cc1 flag
-fobjc-runtime-has-weak, as a sop to PLCompatibilityWeak.
I won't go so far as to say "no functionality change", even
ignoring the new driver flag, but subtle changes in driver
semantics are almost certainly not intended.
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option. On the driver, check if we are using libraries from gcc 4.7 or newer
and if so pass -fuse-init-array to the frontend.
The crtbegin*.o files in gcc 4.7 no longer call the constructors listed in
.ctors, so we have to use .init_array.
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* Converted comments to use \brief to provide summaries;
* Fixed uses of \arg that should be \p;
* Fixed \param [in] [out] to \param [in,out];
* Made minor formatting fixes.
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not \arg ParameterName (which should be used only when documenting that
parameter, not when referring to it from elsewhere).
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override whether headers are system headers by checking for prefixes of the
header name specified in the #include directive.
This allows warnings to be disabled for third-party code which is found in
specific subdirectories of include paths.
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the Clang::ConstructJob() to the new ArgList::getLastArg() routine
with eight argument. That simplifies reusing of this code.
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When enabled, clang generates bounds checks for array and pointers dereferences. Work to follow in LLVM's backend.
OK'ed by Chad; thanks for the review.
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Michael J. Spencer
Chad Rosier
John McCall
Jordan Rose
Alexander Kornienko
Bob Wilson
Tanya Lattner
Benjamin Kramer
Ted Kremenek
NAKAMURA Takumi
Lang Hames
Simon Atanasyan
David Chisnall
James Dennett
Dmitri Gribenko
David Blaikie
Hans Wennborg
Richard Trieu
Alexey Samsonov
Rafael Espindola
Hal Finkel
Richard Smith
Argyrios Kyrtzidis
Sirish Pande
Nuno Lopes