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2013-03-25Use <time.h> rather than <sys/time.h>Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177924 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25Fix a layering violation introduced in r177705.Matt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177922 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25Try harder to be signal-safe inside our signal handler. The most prominent ↵Nick Lewycky
behavioural difference is that we no longer clean the token before emitting it. This fixes a bug where clang hangs in the middle of crashing because the crash handler calls malloc from inside a crash that happened inside of free. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177919 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25<rdar://problem/13434605> Periodically prune the module cache so that it ↵Douglas Gregor
does not grow forever. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177918 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25Emit an error message instead of crashing when dereferencing an incomplete ↵Bill Wendling
pointer type. If the ASM statement is dereferencing an incomplete pointer type, issue an error instead of crashing. <rdar://problem/12700799> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177915 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25IR-gen should not generate an MMX types unless the code is explicitly using MMXChad Rosier
intrinsics. rdar://13213542 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177911 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25[analyzer] Set concrete offset bindings to UnknownVal when processing ↵Anna Zaks
symbolic offset binding, even if no bindings are present. This addresses an undefined value false positive from concreteOffsetBindingIsInvalidatedBySymbolicOffsetAssignment. Fixes PR14877; radar://12991168. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177905 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-25[analyzer] Adds cplusplus.NewDelete checker that check for memory leaks, ↵Anton Yartsev
double free, and use-after-free problems of memory managed by new/delete. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177849 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-24[analyzer] Teach ConstraintManager to ignore NonLoc <> NonLoc comparisons.Jordan Rose
These aren't generated by default, but they are needed when either side of the comparison is tainted. Should fix our internal buildbot. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177846 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-24Simplify code. No functionality change.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177842 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-24Reject -no-integrated-as on windows.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177840 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-24Generate metadata to implement the -cl-kernel-arg-info option.Guy Benyei
OpenCL 1.2 spec. 5.7.3. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177839 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23Make clang to mark static stack allocations with lifetime markers to enable ↵Nadav Rotem
a more aggressive stack coloring. Patch by John McCall with help by Shuxin Yang. rdar://13115369 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177819 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23Revert svn r176894 and r177658.Bob Wilson
Changing -ccc-install-dir to affect cc1's resource-dir setting broke our internal LNT tests. After discussing the situation with Jim, we've decided to pursue an alternate approach. We really want the resource-dir to be located relative to clang, even when using -ccc-install-dir, but we're going to add a fallback setting for the libc++ headers if they don't exist alongside the compiler. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177815 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23Under ARC, when we're passing the address of a strong variableJohn McCall
to an out-parameter using the indirect-writeback conversion, and we copied the current value of the variable to the temporary, make sure that we register an intrinsic use of that value with the optimizer so that the value won't get released until we have a chance to retain it. rdar://13195034 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177813 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23Strip off local qualifiers when converting from RecordType toRichard Trieu
TemplateSpecializationType during template type diffing. This allows the correct printing of diffing qualifiers on templates. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177809 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Teach constraint managers about unsigned comparisons.Jordan Rose
In C, comparisons between signed and unsigned numbers are always done in unsigned-space. Thus, we should know that "i >= 0U" is always true, even if 'i' is signed. Similarly, "u >= 0" is also always true, even though '0' is signed. Part of <rdar://problem/13239003> (false positives related to std::vector) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177806 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Loc-Loc operations (subtraction or comparison) produce a NonLoc.Jordan Rose
For two concrete locations, we were producing another concrete location and then casting it to an integer. We should just create a nonloc::ConcreteInt to begin with. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177805 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Also transform "a < b" to "(b - a) > 0" in the constraint manager.Jordan Rose
We can support the full range of comparison operations between two locations by canonicalizing them as subtraction, as in the previous commit. This won't work (well) if either location includes an offset, or (again) if the comparisons are not consistent about which region comes first. <rdar://problem/13239003> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177803 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23Add reverseComparisonOp and negateComparisonOp to BinaryOperator.Jordan Rose
...and adopt them in the analyzer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177802 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Translate "a != b" to "(b - a) != 0" in the constraint manager.Jordan Rose
Canonicalizing these two forms allows us to better model containers like std::vector, which use "m_start != m_finish" to implement empty() but "m_finish - m_start" to implement size(). The analyzer should have a consistent interpretation of these two symbolic expressions, even though it's not properly reasoning about either one yet. The other unfortunate thing is that while the size() expression will only ever be written "m_finish - m_start", the comparison may be written "m_finish == m_start" or "m_start == m_finish". Right now the analyzer does not attempt to canonicalize those two expressions, since it doesn't know which length expression to pick. Doing this correctly will probably require implementing unary minus as a new SymExpr kind (<rdar://problem/12351075>). For now, the analyzer inverts the order of arguments in the comparison to build the subtraction, on the assumption that "begin() != end()" is written more often than "end() != begin()". This is purely speculation. <rdar://problem/13239003> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177801 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Use SymExprs to represent '<loc> - <loc>' and '<loc> == <loc>'.Jordan Rose
We just treat this as opaque symbols, but even that allows us to handle simple cases where the same condition is tested twice. This is very common in the STL, which means that any project using the STL gets spurious errors. Part of <rdar://problem/13239003>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177800 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23documentation parsing: when providing code completion commentFariborz Jahanian
for a getter used in property-dot syntax, if geter has its own comment use it. // rdar://12791315 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177797 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Warn when a nil key or value are passed to NSMutableDictionary ↵Anna Zaks
and ensure it works with subscripting. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177789 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23[analyzer] Correct the stale comment.Anna Zaks
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177788 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-23If a .syms file is available alongside a sanitizer runtime, pass it to theRichard Smith
linker via --dynamic-list instead of using --export-dynamic. This reduces the size of the dynamic symbol table, and thus of the binary (in some cases by up to ~30%). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177783 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Use RequireCompleteType() instead of isIncompleteType().Bill Wendling
isIncompleteType() returns true or false for template types depending on whether the type is instantiated yet. In this context, that's arbitrary. The better way to check for a complete type is RequireCompleteType(). Thanks to Eli Friedman for noticing this! <rdar://problem/12700799> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177768 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22<rdar://problem/13479539> Only rebuild the global module cache when we're ↵Douglas Gregor
allowed to. This eliminates excessive rebuilds of the global module cache. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177766 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Revert "[analyzer] Break cycles (optionally) when trimming an ExplodedGraph."Jordan Rose
The algorithm used here was ridiculously slow when a potential back-edge pointed to a node that already had a lot of successors. The previous commit makes this feature unnecessary anyway. This reverts r177468 / f4cf6b10f863b9bc716a09b2b2a8c497dcc6aa9b. Conflicts: lib/StaticAnalyzer/Core/BugReporter.cpp git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177765 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22[analyzer] Use a forward BFS instead of a reverse BFS to find shortest paths.Jordan Rose
For a given bug equivalence class, we'd like to emit the report with the shortest path. So far to do this we've been trimming the ExplodedGraph to only contain relevant nodes, then doing a reverse BFS (starting at all the error nodes) to find the shortest paths from the root. However, this is fairly expensive when we are suppressing many bug reports in the same equivalence class. r177468-9 tried to solve this problem by breaking cycles during graph trimming, then updating the BFS priorities after each suppressed report instead of recomputing the whole thing. However, breaking cycles is not a cheap operation because an analysis graph minus cycles is still a DAG, not a tree. This fix changes the algorithm to do a single forward BFS (starting from the root) and to use that to choose the report with the shortest path by looking at the error nodes with the lowest BFS priorities. This was Anna's idea, and has the added advantage of requiring no update step: we can just pick the error node with the next lowest priority to produce the next bug report. <rdar://problem/13474689> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177764 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22[analyzer] Fix ExprEngine::ViewGraph to handle C++ initializers.Jordan Rose
Debugging aid only, no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177762 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22[PCH/Modules] De/Serialize MacroInfos separately than MacroDirectives.Argyrios Kyrtzidis
-Serialize the macro directives history into its own section -Get rid of the macro updates section -When de/serializing an identifier from a module, associate only one macro per submodule that defined+exported it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177761 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22[modules] When a MacroInfo object is deserialized, allocate and store its ↵Argyrios Kyrtzidis
submodule ID. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177760 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22[ms-cxxabi] Implement member data pointers for non-dynamic classesReid Kleckner
Summary: For non-dynamic classes (no virtual bases), member data pointers are simple offsets from the base of the record. Dynamic classes use an aggregate for member data pointers and are therefore currently unsupported. Unlike Itanium, the ms ABI uses 0 to represent null for polymorphic classes. Non-polymorphic classes use -1 like Itanium, since 0 is a valid field offset. Reviewers: rjmccall CC: timurrrr, cfe-commits Differential Revision: http://llvm-reviews.chandlerc.com/D558 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177753 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22<rdar://problem/13479539> Simplify ModuleManager/GlobalModuleIndex ↵Douglas Gregor
interaction to eliminate a pile of extraneous stats(). The refactoring in r177367 introduced a serious performance bug where the "lazy" resolution of module file names in the global module index to actual module file entries in the module manager would perform repeated negative stats(). The new interaction requires the module manager to inform the global module index when a module file has been loaded, eliminating the extraneous stat()s and a bunch of bookkeeping on both sides. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177750 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22documentation parsing. Provide code completion comment Fariborz Jahanian
for self.GetterName where GetterName is the getter method for a property with name different from the property name (declared via a property getter attribute) // rdar://12791315 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177744 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Better fix for r177725.Daniel Jasper
It turns out that -foo; can be an objective C method declaration. So instead of the previous solution, recognize objective C methods only if we are in a declaration scope. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177740 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Align comments to surrounding unformatted comments.Daniel Jasper
Before: int a; // not formatted // formatting this line only After: int a; // not formatted // formatting this line only This makes clang-format stable independent of whether the whole file or single lines are formatted in most cases. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177739 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22[cxxabi] Get ptrdiff_t from the CodeGenModule instead of caching itReid Kleckner
As the comment says, it's a little silly to cache it in the ABI code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177738 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22More precisely recognize ObjC method declarations.Daniel Jasper
Otherwise, +/- and the beginning of constants can be recognized incorrectly. Before: #define A - 1 After: #define A -1 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177725 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Fix DeclRefExpr::getFoundDecl() for usages by reference.Daniel Jasper
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177721 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Make clang-format understand more line comments.Daniel Jasper
Apparently one needs to set LangOptions.LineComment. Before "//* */" got reformatted to "/ /* */" as the lexer was returning the token sequence (slash, comment). This could also lead to weird other stuff, e.g. for people that like to using comments like: //**************** git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177720 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22OpenMP threadprivate directive parsing and semantic analysisAlexey Bataev
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177705 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Warn about attempts to reinterpret_cast between two types that areJohn McCall
hierarchy-related at a possibly nonzero offset. Patch by Alexander Zinenko! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177698 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22Fix a crash-on-valid where a block capture copy expression wasJohn McCall
picking up cleanups from earlier in the statement. Also fix a crash-on-invalid where a reference to an invalid decl from an enclosing scope was causing an expression to fail to build, but only *after* a cleanup was registered from that statement, causing an assertion downstream. The crash-on-valid is rdar://13459289. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177692 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22ubsan: Pass floating-point arguments to the runtime by value if they fit theRichard Smith
value argument. If not, be sure we don't accidentally use a dynamic alloca. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177690 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22<rdar://problem/13479214> Make Clang's <stddef.h> robust against system ↵Douglas Gregor
headers defining size_t/ptrdiff_t/wchar_t. Clang's <stddef.h> provides definitions for the C standard library types size_t, ptrdiff_t, and wchar_t. However, the system's C standard library headers tend to provide the same typedefs, and the two generally avoid each other using the macros _SIZE_T/_PTRDIFF_T/_WCHAR_T. With modules, however, we need to see *all* of the places where these types are defined, so provide the typedefs (ignoring the macros) when modules are enabled. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177686 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21<rdar://problem/13477190> Give the Clang module cache directory some ↵Douglas Gregor
structure, so it's easier to find. We now put the Clang module cache in <system-temp-directory>/org.llvm.clang/ModuleCache. Perhaps some day there will be other caches under <system-temp-directory>/org.llvm.clang>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177671 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Fix indentationDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177665 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-21Objective-C: Tighten the rules when warningFariborz Jahanian
is issused for on overriding 'readwrite' property which is not auto-synthesized. Buttom line is that if hueristics determine that there will be a user implemented setter, no warning will be issued. // rdar://13388503 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177662 91177308-0d34-0410-b5e6-96231b3b80d8
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