Commit Graph

5268 Commits

Author SHA1 Message Date
Ted Kremenek 34a691734e Modified the dead stores checker to...
1) Check if a dead store appears as a subexpression.  For such cases, we emit
   a verbose diagnostic so that users aren't confused.  This addresses:
   
   <rdar://problem/5968508> checker gives misleading report for dead store in loop
   
2) Don't emit a dead store warning when assigning a null value to a pointer.
   This is a common form of defensive programming.  We may wish to make
   this an option to the the checker one day.
   
   This addresses the feature request in the following email:
   
   http://lists.cs.uiuc.edu/pipermail/cfe-dev/2008-June/001978.html

llvm-svn: 52555
2008-06-20 21:45:25 +00:00
Ted Kremenek 99ecdd175d Added ParentMap, a class to represent a lazily constructed mapping from child to parents.
llvm-svn: 52553
2008-06-20 21:40:36 +00:00
Ted Kremenek d50c7a4b0d Added "Decl::getCodyBody()", a virtual method that returns the root AST node (Stmt*) that the Decl wraps (if any). Currently this only returns a non-null value for FunctionDecl and ObjCMethodDecl.
llvm-svn: 52552
2008-06-20 21:39:47 +00:00
Ted Kremenek e562289a0f Updated latest static analysis build.
llvm-svn: 52512
2008-06-19 23:20:00 +00:00
Ted Kremenek 940a738e77 Add DTD information.
llvm-svn: 52511
2008-06-19 23:14:24 +00:00
Mike Stump d7667bd8e0 Remove tabs.
llvm-svn: 52507
2008-06-19 20:57:50 +00:00
Mike Stump 65643c6480 One more test checkin.
Remove an extra space at the end of a line.

llvm-svn: 52504
2008-06-19 19:52:46 +00:00
Mike Stump 01e07653d4 Test commit to see if new account works.
I choose to remove extraneous whitespace at end of lines as a semantic
nop for the test.

llvm-svn: 52503
2008-06-19 19:28:49 +00:00
Ted Kremenek 46c82ab994 Introduce initial transfer function support for __imag__ and __real__. We don't
have complex RValues yet, so this logic is only fully implemented when __imag__
and __real__ are used on non-complex types.

llvm-svn: 52501
2008-06-19 17:55:38 +00:00
Ted Kremenek 1ce19b9941 Updated static analyzer build to checker-39.
llvm-svn: 52446
2008-06-18 05:43:24 +00:00
Ted Kremenek 9a935fbdeb Added a new ProgramPoint: PostPurgeDeadSymbols. This new program point distinguishes between the cases when we just evaluated the transfer function of a Stmt* (PostStmt) or performed a load (PostLoad). This solves a caching bug observed in a recent bug report.
llvm-svn: 52443
2008-06-18 05:34:07 +00:00
Ted Kremenek e157b265b7 Update website link to latest checker build.
llvm-svn: 52429
2008-06-17 19:23:54 +00:00
Ted Kremenek 3802fedfe4 Fix non-termination bug reported by Thomas Clement!
llvm-svn: 52426
2008-06-17 19:14:06 +00:00
Chris Lattner 5696e7badf Change self/_cmd to be instances of ImplicitParamDecl instead of ParmVarDecl.
Patch by David Chisnall!

llvm-svn: 52422
2008-06-17 18:05:57 +00:00
Nuno Lopes a02e2f991b handle -arch and -isysroot correctly (like ccc-analyszer do).
Patch by Filipe Cabecinhas

llvm-svn: 52417
2008-06-17 17:23:14 +00:00
Ted Kremenek 1cc38e71b3 Added link to Developer Meeting.
llvm-svn: 52403
2008-06-17 14:02:30 +00:00
Ted Kremenek bacb584c8b Flush bullets in <ul>
llvm-svn: 52402
2008-06-17 13:55:34 +00:00
Ted Kremenek 77251e9f54 Convert <h4> to <h3>.
llvm-svn: 52400
2008-06-17 13:48:36 +00:00
Ted Kremenek 3c02064b05 Tighten <h2> padding.
llvm-svn: 52399
2008-06-17 13:48:17 +00:00
Ted Kremenek 473b3fb519 Simplify anchor.
llvm-svn: 52398
2008-06-17 13:47:52 +00:00
Ted Kremenek c07d000356 Remove margin above <h1>.
llvm-svn: 52389
2008-06-17 07:05:45 +00:00
Ted Kremenek deba2fbfa4 Make "important notes" more succinct.
llvm-svn: 52388
2008-06-17 06:47:58 +00:00
Ted Kremenek 9eb18aa82b Include the "latest build" checker link using SSI.
llvm-svn: 52387
2008-06-17 06:43:11 +00:00
Ted Kremenek 2d93ec7eca Split static analysis page into two pages: a high-level information page (with quick download links) and a usage page.
llvm-svn: 52386
2008-06-17 06:38:07 +00:00
Ted Kremenek 7d14f86f4a Tweak font sizes.
Color <h3> light blue, <h2> a dark grey.

llvm-svn: 52385
2008-06-17 06:36:13 +00:00
Ted Kremenek cbcfe6c693 Convert <h2> -> <h3>. <h1> -> <h2> (more consistent with other pages)
llvm-svn: 52384
2008-06-17 06:35:36 +00:00
Eli Friedman fd4c32164c Make this test actually pass, in addition to the previous patch
which made it work.

llvm-svn: 52382
2008-06-17 05:36:46 +00:00
Ted Kremenek c6501dbc10 Fix more strict-aliasing warnings.
Fix indentation of class declarations in ExprCXX.h

llvm-svn: 52380
2008-06-17 03:11:08 +00:00
Ted Kremenek 3dd7724711 Only use colored output when the environment variable SCAN_BUILD_COLOR is set.
llvm-svn: 52379
2008-06-17 03:06:59 +00:00
Ted Kremenek 08e171183f This patch is motivated by numerous strict-aliasing warnings when compiling
clang as a Release build.

The big change is that all AST nodes (subclasses of Stmt) whose children are
Expr* store their children as Stmt* or arrays of Stmt*. This is to remove
strict-aliasing warnings when using StmtIterator. None of the interfaces of any
of the classes have changed (except those with arg_iterators, see below), as the
accessor methods introduce the needed casts (via cast<>). While this extra
casting may seem cumbersome, it actually adds some important sanity checks
throughout the codebase, as clients using StmtIterator can potentially overwrite
children that are expected to be Expr* with Stmt* (that aren't Expr*). The casts
provide extra sanity checks that are operational in debug builds to catch
invariant violations such as these.

For classes that have arg_iterators (e.g., CallExpr), the definition of
arg_iterator has been replaced. Instead of it being Expr**, it is an actual
class (called ExprIterator) that wraps a Stmt**, and provides the necessary
operators for iteration. The nice thing about this class is that it also uses
cast<> to type-checking, which introduces extra sanity checks throughout the
codebase that are useful for debugging.

A few of the CodeGen functions that use arg_iterator (especially from
OverloadExpr) have been modified to take begin and end iterators instead of a
base Expr** and the number of arguments. This matches more with the abstraction
of iteration. This still needs to be cleaned up a little bit, as clients expect
that ExprIterator is a RandomAccessIterator (which we may or may not wish to
allow for efficiency of representation).

This is a fairly large patch. It passes the tests (except CodeGen/bitfield.c,
which was already broken) on both a Debug and Release build, but it should
obviously be reviewed.

llvm-svn: 52378
2008-06-17 02:43:46 +00:00
Ted Kremenek 1c77e8f26b Silence uninitialized value warning in Release build.
llvm-svn: 52376
2008-06-16 23:46:27 +00:00
Ted Kremenek bba87243aa Silence uninitialized value warning during Release build.
llvm-svn: 52375
2008-06-16 23:45:12 +00:00
Ted Kremenek 51ca6fa512 Remove debugging message in ccc-analyzer.
Add color diagnostics from scan-build, and indicate the number of bugs found (if any).

llvm-svn: 52372
2008-06-16 22:40:14 +00:00
Ted Kremenek c9904b61af Latest release is checker-37.
llvm-svn: 52370
2008-06-16 21:46:12 +00:00
Ted Kremenek c17ec3e27f Re-enable the analyzer.
llvm-svn: 52367
2008-06-16 21:41:07 +00:00
Ted Kremenek 6bed7d6b1e Remove Analysis-Apple.
llvm-svn: 52366
2008-06-16 21:21:48 +00:00
Ted Kremenek f3c8650502 Move test case "uninit-msg-expr.m" from Analysis-Apple to Analysis (now works on all platforms).
llvm-svn: 52362
2008-06-16 21:15:29 +00:00
Ted Kremenek 2eed4d7a25 Moved test case NoReturn.m from Analysis-Apple to Analysis (now works on all platforms).
llvm-svn: 52359
2008-06-16 21:05:04 +00:00
Ted Kremenek bbe6111cc3 Move NSString.m test case from Analysis-Apple to Analysis. The test case now works on all platforms.
llvm-svn: 52354
2008-06-16 20:37:30 +00:00
Ted Kremenek ccafce3d4c Update test case to use -pedantic (makes the test case more clear).
llvm-svn: 52349
2008-06-16 19:53:46 +00:00
Ted Kremenek 5935a17daf Fix misspelling of "svelte".
llvm-svn: 52348
2008-06-16 19:51:41 +00:00
Ted Kremenek 951bc67096 Move Analysis-Apple/CFString.c to Analysis (the test case now works on all platforms).
llvm-svn: 52346
2008-06-16 19:35:31 +00:00
Ted Kremenek 107f13971f Move CFDateGC.m test case from Analysis-Apple to Analysis (it now runs on all platforms).
llvm-svn: 52344
2008-06-16 18:46:17 +00:00
Ted Kremenek 7056bb1f21 Moved CFDate.m from test/Analysis-Apple to test/Analysis, and added the necessary declarations from Foundation.h to CFDate.m so that the test case can be exercised on all platforms.
llvm-svn: 52343
2008-06-16 18:34:22 +00:00
Ted Kremenek 87c760af36 Add test case for NSString format-string checking.
llvm-svn: 52337
2008-06-16 18:01:05 +00:00
Ted Kremenek 34f664d443 Introduce preliminary support for NSString format-string checking.
Patch by Nikita Zhuk!

llvm-svn: 52336
2008-06-16 18:00:42 +00:00
Chris Lattner 22b9ff4131 force size of alloca to i32, which is currently required by LLVM IR.
This fixes use of alloca on 64-bit systems.

llvm-svn: 52334
2008-06-16 17:15:14 +00:00
Eli Friedman 327944b343 Basic support for volatile loads and stores. Stores the volatile
qualifier in the lvalue, and changes lvalue loads/stores to honor 
the volatile flag.  Places which need some further attention are marked 
with FIXMEs.

Patch by Cédric Venet.

llvm-svn: 52264
2008-06-13 23:01:12 +00:00
Ted Kremenek 871fcb57e7 Tweak h1 line-height to avoid text overlay issues in the headers.
llvm-svn: 52256
2008-06-13 21:09:07 +00:00
Ted Kremenek 54aba504be CSS tweaks with the menu to help resolve some menu/content overlap issues.
llvm-svn: 52255
2008-06-13 21:06:53 +00:00