Commit Graph

32 Commits

Author SHA1 Message Date
Aaron Ballman 981ba24156 None of these attributes require FunctionTemplate to be explicitly listed as part of their subject definition. FunctionTemplateDecls are not what the attribute appertains to in the first place -- it attaches to the underlying FunctionDecl.
The attribute emitter was using FunctionTemplate to map the diagnostic to "functions or methods", but that isn't a particularly clear diagnostic in these cases anyway (since they do not apply to ObjC methods). Updated the attribute emitter to remove custom logic for FunctionTemplateDecl, and updated the test cases for the change in diagnostic wording.

llvm-svn: 209209
2014-05-20 14:10:53 +00:00
Aaron Ballman 69e6e7c604 Capability attributes can now be declared on a typedef declaration as well as a structure declaration. This allows for C code to use Boolean expressions on a capability as part of another attribute. Eg) __attribute__((requires_capability(!SomeCapability)))
llvm-svn: 204657
2014-03-24 19:29:19 +00:00
Aaron Ballman efe348ec44 DeLesley Hutchins (who wrote the original thread-safety attribute functionality) and I have agreed to start migrating from lock-specific terminology to "capability"-specific terminology. This opens the door for future threading-related analysis passes so that a common nomenclature can be used.
The following attributes have been (silently) deprecated, with their replacements listed:

lockable => capability
exclusive_locks_required => requires_capability
shared_locks_required => requires_shared_capability
locks_excluded => requires_capability

There are no functional changes intended.

llvm-svn: 201585
2014-02-18 17:36:50 +00:00
Aaron Ballman 1da282ae2d Removing some more unnecessary manual quotes from attribute diagnostics. Updated the associated testcase because QualType pretty printing was an improvement.
llvm-svn: 198372
2014-01-02 23:15:58 +00:00
Aaron Ballman 05e420abad Updated the wording of two attribute-related diagnostics so that they print the offending attribute name. Also updates the associated test cases.
llvm-svn: 198355
2014-01-02 21:26:14 +00:00
Aaron Ballman 07e2764ce7 Removed a duplicate diagnostic related to attribute subjects for thread safety annotations, and replaced it with the more general attribute diagnostic. Updated the test case in the one instance where wording changed. No functional change intended.
llvm-svn: 195275
2013-11-20 21:41:42 +00:00
Benjamin Kramer ca9fe1453f Guard availability and thread safety attributes against wide strings.
Found by inspection.

llvm-svn: 190701
2013-09-13 16:30:12 +00:00
Aaron Ballman b7243381c2 Added the attribute name to the err_attribute_wrong_number_arguments diagnostic for clarity; updated almost all of the affected test cases.
Thanks to Fariborz Jahanian for the suggestion!

llvm-svn: 186980
2013-07-23 19:30:11 +00:00
Aaron Ballman 2998227501 Consolidate several attribute argument diagnostics into a single, selectable diagnostic. This makes the diagnostic more consistent.
llvm-svn: 186940
2013-07-23 14:03:57 +00:00
DeLesley Hutchins b682431775 Thread safety analysis: add two new attributes to the thread safety analysis:
assert_exclusive_lock and assert_shared_lock.  These attributes are used to
mark functions that dynamically check (i.e. assert) that a lock is held.

llvm-svn: 182170
2013-05-17 23:02:59 +00:00
DeLesley Hutchins 66e300e6f9 Thread safety analysis: Fixed ICE caused by double delete when late parsed
attributes are attached to function declarations nested inside a class method.

llvm-svn: 167321
2012-11-02 21:44:32 +00:00
DeLesley Hutchins f1150d3a16 Thread-safety analysis: fix scoping issues related to 'this', including an
ICE in friend functions.

llvm-svn: 162229
2012-08-20 21:32:18 +00:00
DeLesley Hutchins 19c722d61d Thread safety analysis: prevent a compiler error in cases where a
late-parsed attribute is attached to an invalid declaration.

llvm-svn: 161997
2012-08-15 22:41:04 +00:00
DeLesley Hutchins 5ff430ce06 Thread safety analysis: check for LOCKABLE attribute on base classes.
llvm-svn: 156175
2012-05-04 16:28:38 +00:00
DeLesley Hutchins 90ff4683f7 Thread safety analysis: additional support for smart pointers in lock expressions.
llvm-svn: 156030
2012-05-02 22:18:42 +00:00
DeLesley Hutchins d96b46ace2 Thread Safety Analysis: fixed attribute handling for lock_returned attribute.
llvm-svn: 156005
2012-05-02 17:38:37 +00:00
DeLesley Hutchins 8e9fc0592b Thread safety analysis: refactor test cases so that the style is
consistent.

llvm-svn: 155388
2012-04-23 20:41:57 +00:00
DeLesley Hutchins e09be231fa Thread safety analysis: support the use of pt_guarded_by attributes
on smart pointers.  Also adds test case for previous commit.

llvm-svn: 155379
2012-04-23 18:39:55 +00:00
DeLesley Hutchins 70b5e8eefc Thread-safety analysis: support new "pointer to member" syntax for
existentially quantified lock expressions.

llvm-svn: 155357
2012-04-23 16:45:01 +00:00
DeLesley Hutchins 8d11c797b2 Thread safety analysis: split warnings into two groups: attribute warnings
which are checked in the parser, and analysis warnings that require the
full analysis.  This allows attribute syntax to be checked independently
of the full thread safety analysis.  Also introduces a new warning for the
case where a string is used as a lock expression; this allows the analysis
to gracefully handle expressions that would otherwise cause a parse error.

llvm-svn: 155129
2012-04-19 16:10:44 +00:00
Douglas Gregor 3024f07c12 Implement C++11 [expr.prim.general]p3, which permits the use of 'this'
in the declaration of a non-static member function after the
(optional) cv-qualifier-seq, which in practice means in the exception
specification and late-specified return type. 

The new scheme here used to manage 'this' outside of a member function
scope is more general than the Scope-based mechanism previously used
for non-static data member initializers and late-parsesd attributes,
because it can also handle the cv-qualifiers on the member
function. Note, however, that a separate pass is required for static
member functions to determine whether 'this' was used, because we
might not know that we have a static function until after declaration
matching.

Finally, this introduces name mangling for 'this' and for the implicit
'this', which is intended to match GCC's mangling. Independent
verification for the new mangling test case would be appreciated.

Fixes PR10036 and PR12450.

llvm-svn: 154799
2012-04-16 07:05:22 +00:00
DeLesley Hutchins 481d5abf45 Thread safety analysis: downgraded requirement that mutex expressions refer to a lockable type from error to warning.
llvm-svn: 154198
2012-04-06 20:02:30 +00:00
DeLesley Hutchins 6f86004cbc Fixed scoping error for late parsed attributes in nested classes.
llvm-svn: 154173
2012-04-06 15:10:17 +00:00
DeLesley Hutchins bd2ee13e78 Make late-parsed attributes follow the conventions of ordinary
GNU attributes to a better extent, by allowing them in more
places on a declator.

llvm-svn: 151945
2012-03-02 22:12:59 +00:00
DeLesley Hutchins 3fc6e4a7cd Allow thread safety attributes on function definitions.
For compatibility with gcc, clang will now parse gcc attributes on
function definitions, but issue a warning if the attribute is not a
thread safety attribute.  Warning controlled by -Wgcc-compat.

llvm-svn: 150698
2012-02-16 16:50:43 +00:00
Richard Trieu 553b2b2e5d Modify how the -verify flag works. Currently, the verification string and
diagnostic message are compared.  If either is a substring of the other, then
no error is given.  This gives rise to an unexpected case:

  // expect-error{{candidate function has different number of parameters}}

will match the following error messages from Clang:

  candidate function has different number of parameters (expected 1 but has 2)
  candidate function has different number of parameters

It will also match these other error messages:

  candidate function
  function has different number of parameters
  number of parameters

This patch will change so that the verification string must be a substring of
the diagnostic message before accepting.  Also, all the failing tests from this
change have been corrected.  Some stats from this cleanup:

87 - removed extra spaces around verification strings
70 - wording updates to diagnostics
40 - extra leading or trailing characters (typos, unmatched parens or quotes)
35 - diagnostic level was included (error:, warning:, or note:)
18 - flag name put in the warning (-Wprotocol)

llvm-svn: 146619
2011-12-15 00:38:15 +00:00
DeLesley Hutchins 36f5d8518b Allow empty argument lists in thread safety attributes
llvm-svn: 146580
2011-12-14 19:36:06 +00:00
Caitlin Sadowski bc1f11162a Thread safety: small formatting change in test comments
llvm-svn: 139306
2011-09-08 18:07:26 +00:00
Caitlin Sadowski 990d571226 Thread safety: added support for function scopes in attribute arguments.
This patch was written by DeLesley Hutchins.

llvm-svn: 139302
2011-09-08 17:42:31 +00:00
Caitlin Sadowski 9385dd7415 Thread Safety: Patch to implement delayed parsing of attributes within a
class scope.

This patch was also written by DeLesley Hutchins.

llvm-svn: 139301
2011-09-08 17:42:22 +00:00
Caitlin Sadowski 293d24a5ba Thread safety: various minor bugfixes, with test cases
This patch is by DeLesley Hutchins.

llvm-svn: 138738
2011-08-29 17:12:27 +00:00
Caitlin Sadowski afbbd8e5ad Thread-safety analysis: adding in a basic lockset tracking system. This
system flags an error when unlocking a lock which was not held, locking
the same lock twice, having a different lockset on each iteration of a
loop, or going out of scope while still holding a lock. In order to
successfully use the lockset, this patch also makes sure that attribute
arguments are attached correctly for later parsing.

This patch was also worked on by DeLesley Hutchins.

Note: This patch has been reviewed by Chandler Carruth and Jeffrey
Yasskin. Feel free to provide post-commit review comments for a
subsequent patch.

llvm-svn: 138350
2011-08-23 18:46:34 +00:00