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path: root/lib/Sema/SemaChecking.cpp
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2010-02-15Add Sema support for __builtin_fpclassify by extending the existing check ↵Benjamin Kramer
for __builtin_isinf and friends. Part of PR6083. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@96291 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11Uncomment lines I never meant to have left commented in a commit.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95906 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11Patch by Cristian Draghici:Ted Kremenek
Enhance the printf format string checking when using the format specifier flags ' ', '0', '+' with the 'p' or 's' conversions (since they are nonsensical and undefined). This is similar to GCC's checking. Also warning when a precision is used with the 'p' conversin specifier, since it has no meaning. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95869 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10Convert tabs to spaces.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95756 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06Don't diagnose missing noreturns for uninstantiated templates. Fixes PR6247.Anders Carlsson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95487 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05Standardize the parsing of function type attributes in a way thatJohn McCall
follows (as conservatively as possible) gcc's current behavior: attributes written on return types that don't apply there are applied to the function instead, etc. Only parse CC attributes as type attributes, not as decl attributes; don't accepet noreturn as a decl attribute on ValueDecls, either (it still needs to apply to other decls, like blocks). Consistently consume CC/noreturn information throughout codegen; enforce this by removing their default values in CodeGenTypes::getFunctionInfo(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-04Move ParseFormatString() and FormatStringHandler back into the ↵Ted Kremenek
analyze_printf namespace. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95324 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Mark dtors for parameter variables and eliminate some redundant type munging.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95079 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Access control for implicit destructor calls. Diagnostic could be orders ofJohn McCall
magnitude clearer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@95078 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01In C++, an initializer on a variable doesn't necessarily mean it's the ↵Sebastian Redl
definition. With that in mind, rename getDefinition to getAnyInitializer (to distinguish it from getInit) and reimplement it in terms of isThisDeclarationADefinition. Update all code to use this new function. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94999 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01Use early return as suggested by Cristian Draghici.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94994 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01Format string checking: selectively ignore implicit casts to 'int'Ted Kremenek
when checking if the format specifier matches the type of the data argument and the length modifier indicates the data type is 'char' or 'short'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94992 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01Fix for PR5185. C99 [*] VLA notation should be disallowed in function ↵Sam Weinig
definitions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-30Add basic type checking of format string conversion specifiers and their ↵Ted Kremenek
arguments. Thanks to Cristian Draghici for his help with this patch! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94864 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Be a little more permissive than C99: allow 'unsigned' to be used forTed Kremenek
the field width and precision of a format specifier instead of just 'int'. This matches GCC, and fixes <rdar://problem/6079850>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94856 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Switch Sema over to using the new implementation of format stringTed Kremenek
checking. It passes all existing tests, and the diagnostics have been refined to provide better range information (we now highlight individual format specifiers) and more precise wording in the diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Alternate format string checking: issue warnings for incomplete format ↵Ted Kremenek
specifiers. In addition, move ParseFormatString() and FormatStringHandler() from the clang::analyze_printf to the clang namespace. Hopefully this will resolve some link errors on Linux. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94794 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Alternate format string checking: issue a warning for invalid conversion ↵Ted Kremenek
specifiers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94792 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Alternate format string checking: check for excess data arguments.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94787 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Alternate format string checking: check if the number of format specifiers ↵Ted Kremenek
exceeds the number of arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94785 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Alternate format string checking: warn of '%n' as being potentially insecure.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94782 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29Add precision/field width checking to AlternateCheckPrintfString().Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94774 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-28Start fleshing out Sema::AlternateCheckPrintfString():Ted Kremenek
- Add an anonymous class 'CheckPrintfHandler' which will do the checking of specific format specifiers - Add checking for using the '@' conversion specifier outside an ObjC string literal - Add checking for null characters within the string git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94761 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-28Add placeholder function in Sema for new format string checking logic.Ted Kremenek
This function will use the format string parsing logic in libAnalysis, and once it is shown to be better than the current implementation it will replace AlternateCheckPrintfString() entirely. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-28Fix 80 col violation.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94717 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-28Remove invalid conversion specifiers from format string checking.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25Split libAnalysis into two libraries: libAnalysis and libChecker.Ted Kremenek
(1) libAnalysis is a generic analysis library that can be used by Sema. It defines the CFG, basic dataflow analysis primitives, and inexpensive flow-sensitive analyses (e.g. LiveVariables). (2) libChecker contains the guts of the static analyzer, incuding the path-sensitive analysis engine and domain-specific checks. Now any clients that want to use the frontend to build their own tools don't need to link in the entire static analyzer. This change exposes various obvious cleanups that can be made to the layout of files and headers in libChecker. More changes pending. :) This change also exposed a layering violation between AnalysisContext and MemRegion. BlockInvocationContext shouldn't explicitly know about BlockDataRegions. For now I've removed the BlockDataRegion* from BlockInvocationContext (removing context-sensitivity; although this wasn't used yet). We need to have a better way to extend BlockInvocationContext (and any LocationContext) to add context-sensitivty. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94406 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Wire up the new range reporting for unreachable code.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94118 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Improve unreachable code warnings with respect to dead member andMike Stump
dead array references. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94115 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Improve unreachable code warnings for with respect to dead functional casts ↵Mike Stump
in C++. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94106 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Improve unreachable code warnings for with respect to c-style casts.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94094 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Improve unreachable code warnings for with respect to ? :.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Improve unreachable code warnings for with respect to compoundMike Stump
assignments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94086 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Improve unreachable code warnings with respect to dead binary andMike Stump
unary operators. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94084 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Speed up compilation by avoiding generating exceptional edges fromMike Stump
CallExprs as those edges help cause a n^2 explosion in the number of destructor calls. Other consumers, such as static analysis, that would like to have more a more complete CFG can select the inclusion of those edges as CFG build time. This also fixes up the two compilation users of CFGs to be tolerant of having or not having those edges. All catch code is assumed be to live if we didn't generate the exceptional edges for CallExprs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94074 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-21Move some recent checking code into SemaChecking instead.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94067 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-11Roll out ASTContext::getTypeSizeInChars(), replacing instances ofKen Dyck
"ASTContext::getTypeSize() / 8". Replace [u]int64_t variables with CharUnits ones as appropriate. Also rename RawType, fromRaw(), and getRaw() in CharUnits to QuantityType, fromQuantity(), and getQuantity() for clarity. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93153 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Don't assert when dealing with unsigned casts of lvalues. Fixes PR5961.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Derive tighter ranges for & and >> in the conversion-checking code.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92862 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06Significantly rework the calculation of effective integer-expression rangesJohn McCall
for -Wsign-compare and -Wconversion, and use that coordinated logic to drive both diagnostics. The new logic works more transparently with implicit conversions, conditional operators, etc., as well as bringing -Wconversion's ability to deal with pseudo-closed operations (e.g. arithmetic on shorts) to -Wsign-compare. Fixes PRs 5887, 5937, 5938, and 5939. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92823 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Remove stale comment. We already do format string checking for functions ↵Ted Kremenek
with the format attribute. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92553 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-04Move the -Wconversion logic into SemaChecking.cpp. There's a fair amount ofJohn McCall
overlap between this and -Wsign-compare, which is why I want them in the same place. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92543 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-04Move the -Wsign-compare logic into SemaChecking.cpp.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92541 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23Update for the intrinsic changes in llvm: the object size intrinsicEric Christopher
only takes a boolean second argument now. Update tests accordingly. Currently the builtin still accepts the full range for compatibility. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91983 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-22fix a bug handling the gnu ?: extension. Patch by Storlek on IRC,Chris Lattner
who prefers to be stealthy and mysterious. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91888 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-04Fix for PR5679: make __builtin_prefetch a bit more flexible in what it acceptsEli Friedman
as a constant integer. Also, some minor cleanup and improvements to the diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90504 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-17Adjust format attribute index for implicit object arguments. Fixes PR5521.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89113 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-16First part of changes to eliminate problems with cv-qualifiers andDouglas Gregor
sugared types. The basic problem is that our qualifier accessors (getQualifiers, getCVRQualifiers, isConstQualified, etc.) only look at the current QualType and not at any qualifiers that come from sugared types, meaning that we won't see these qualifiers through, e.g., typedefs: typedef const int CInt; typedef CInt Self; Self.isConstQualified() currently returns false! Various bugs (e.g., PR5383) have cropped up all over the front end due to such problems. I'm addressing this problem by splitting each qualifier accessor into two versions: - the "local" version only returns qualifiers on this particular QualType instance - the "normal" version that will eventually combine qualifiers from this QualType instance with the qualifiers on the canonical type to produce the full set of qualifiers. This commit adds the local versions and switches a few callers from the "normal" version (e.g., isConstQualified) over to the "local" version (e.g., isLocalConstQualified) when that is the right thing to do, e.g., because we're printing or serializing the qualifiers. Also, switch a bunch of Context.getCanonicalType(T1).getUnqualifiedType() == Context.getCanonicalType(T2).getQualifiedType() expressions over to Context.hasSameUnqualifiedType(T1, T2) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@88969 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-30warn about returning the address of a label.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85576 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23Eliminate QualifiedDeclRefExpr, which captured the notion of aDouglas Gregor
qualified reference to a declaration that is not a non-static data member or non-static member function, e.g., namespace N { int i; } int j = N::i; Instead, extend DeclRefExpr to optionally store the qualifier. Most clients won't see or care about the difference (since QualifierDeclRefExpr inherited DeclRefExpr). However, this reduces the number of top-level expression types that clients need to cope with, brings the implementation of DeclRefExpr into line with MemberExpr, and simplifies and unifies our handling of declaration references. Extended DeclRefExpr to (optionally) store explicitly-specified template arguments. This occurs when naming a declaration via a template-id (which will be stored in a TemplateIdRefExpr) that, following template argument deduction and (possibly) overload resolution, is replaced with a DeclRefExpr that refers to a template specialization but maintains the template arguments as written. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84962 91177308-0d34-0410-b5e6-96231b3b80d8
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