A test case to test that -warn-dead-stores does not emit a warning for stores to variables marked with '#pragma unused'.

llvm-svn: 67570

Update several tests to explicitly use BasicConstraintManager as well as to use RangeConstraintManager with RegionStoreManager.

llvm-svn: 64854

printf-like functions, both builtin functions and those in the
C library. The function-call checker now queries this attribute do
determine if we have a printf-like function, rather than scanning
through the list of "known functions IDs". However, there are 5
functions they are not yet "builtins", so the function-call checker
handles them specifically still:

  - fprintf and vfprintf: the builtins mechanism cannot (yet)
    express FILE* arguments, so these can't be encoded.
  - NSLog: the builtins mechanism cannot (yet) express NSString*
    arguments, so this (and NSLogv) can't be encoded.
  - asprintf and vasprintf: these aren't part of the C99 standard
    library, so we really shouldn't be defining them as builtins in
    the general case (and we don't seem to have the machinery to make
    them builtins only on certain targets and depending on whether
    extensions are enabled).

llvm-svn: 64512

Fix PR 2514: Do not flag dead initializations for variables initialized to a constant global variable.

llvm-svn: 64149

individual checker options.

llvm-svn: 62634

Dead stores checker: Fix <rdar://problem/6506065> by being more selective when say that a store is dead even though the computed value is used in the enclosing expression.

llvm-svn: 62552

Dead stores checker: Don't flag dead stores for self-assignments (common escape hatch for 'unused variable' warnings).

llvm-svn: 62010

Enhance dead store checker to not flag preincrements to dead variables where the preincrement is a subexpression, e.g. foo(++x);  This can cause false negatives, but will remove a whole class of false positives.

llvm-svn: 57554

llvm-svn: 56707

llvm-svn: 56706

Fixes <rdar://problem/6248086>

llvm-svn: 56645

llvm-svn: 55801

llvm-svn: 54436

 - Like EXTENSION but always generates a warning (even without
   -pedantic).
 - Updated ptr -> int, int -> ptr, and incompatible cast warnings to
   be EXTWARN.
 - Other EXTENSION level diagnostics should be audited for upgrade.
 - Updated several test cases to fix code which produced unanticipated
   warnings.

llvm-svn: 54335

This fixes PR 2573: http://llvm.org/bugs/show_bug.cgi?id=2573

llvm-svn: 54009

llvm-svn: 53983

llvm-svn: 53966

llvm-svn: 53960

'&&' clang commands together so that the test status reflects the results of all three clang executions.

llvm-svn: 53132

Update test case:  simply running "clang -checker-simple" doesn't invoke the dead store checker anymore.  We need "-warn-dead-stores" as well.

llvm-svn: 53055

llvm-svn: 52568

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

llvm-svn: 51395

llvm-svn: 50679

llvm-svn: 49735

llvm-svn: 49647

llvm-svn: 48539

llvm-svn: 44305

block-level expressions are evaluated the same as regular expressions. Test
case provided by Nuno Lopes.

llvm-svn: 44247

for correct propagation/update of liveness information within subexpressions
of Block-Level expressions.  Test case provided by Nuno Lopes.

llvm-svn: 44225

llvm-svn: 44221