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2013-03-16[analyzer] Model trivial copy/move assignment operators with a bind as well.Jordan Rose
r175234 allowed the analyzer to model trivial copy/move constructors as an aggregate bind. This commit extends that to trivial assignment operators as well. Like the last commit, one of the motivating factors here is not warning when the right-hand object is partially-initialized, which can have legitimate uses. <rdar://problem/13405162> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177220 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-16Remove -Wspellcheck and replace it with a diagnostic option.Argyrios Kyrtzidis
Thanks to Richard S. for pointing out that the warning would show up with -Weverything. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177218 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-16Exploit this-return of a callsite in a this-return function.Manman Ren
For constructors/desctructors that return 'this', if there exists a callsite that returns 'this' and is immediately before the return instruction, make sure we are using the return value from the callsite. We don't need to keep 'this' alive through the callsite. It also enables optimizations in the backend, such as tail call optimization. rdar://12818789 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177211 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15Improve template diffing handling of default integer values.Richard Trieu
When the template argument is both default and value dependent, the expression retrieved for the default argument cannot be evaluated, thus never matching any argument value. To get the proper value, get the template argument from the desugared template specialization. Also, output the original expression to provide more information about the argument mismatch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177209 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15[analyzer] Use isLiveRegion to determine when SymbolRegionValue is dead.Anna Zaks
Fixes a FIXME, improves dead symbol collection, suppresses a false positive, which resulted from reusing the same symbol twice for simulation of 2 calls to the same function. Fixing this lead to 2 possible false negatives in CString checker. Since the checker is still alpha and the solution will not require revert of this commit, move the tests to a FIXME section. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177206 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15[analyzer] BugReporterVisitors: handle the case where a ternary operator is ↵Anna Zaks
wrapped in a cast. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177205 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15Enhance -Wtautological-constant-out-of-range-compare to include the name of ↵Ted Kremenek
the enum constant. This is QoI. Fixes <rdar://problem/13076064>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177190 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15[analyzer] Look through ExprWhenCleanups when trying to track a NULL.Jordan Rose
Silences a few false positives in LLVM. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177186 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15ClangTool output cleanupEdwin Vane
Information messages sent to stdout by ClangTool now only happen when the -debug flag is set. Error messages that used to go to stdout now go to stderr. Author: Ariel J Bernal <ariel.j.bernal@intel.com> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177177 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15Force column info only for direct inlined functions. This should strikeAdrian Prantl
the balance between expected behavior and compatibility with the gdb testsuite. (GDB gets confused if we break an expression into multiple debug stmts so we enable this behavior only for inlined functions. For the full experience people can still use -gcolumn-info.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177164 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15c: Also chek for integer overflow for '%' operator.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177163 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15c: add the missing binary operatory when checkingFariborz Jahanian
for integer overflow. // rdar://13423975 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177162 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15Fixup for r176934. More careful setup of path to llvm-symbolizerAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177145 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15[analyzer] Teach trackNullOrUndef to look through ternary operatorsAnna Zaks
Allows the suppression visitors trigger more often. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177137 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-15PR15290: 'this' is not permitted in the declaration of a friend function,Richard Smith
therefore references to members should not be transformed into implicit uses of 'this'. Patch by Ismail Pazarbasi! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177134 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Diagnose about extern "C" functions returning c++ objectsFariborz Jahanian
on first declaration only. // rdar://13364028 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177127 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Don't try to typo-correct 'super' in an objc method.Argyrios Kyrtzidis
This created 2 issues: 1) Performance issue, since typo-correction with PCH/modules is rather expensive. 2) Correctness issue, since if it managed to "correct" 'super' then bogus compiler errors would be emitted, like this: 3.m:8:3: error: unknown type name 'super'; did you mean 'super1'? super.x = 0; ^~~~~ super1 t3.m:5:13: note: 'super1' declared here typedef int super1; ^ t3.m:8:8: error: expected identifier or '(' super.x = 0; ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177126 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Add a testcase for r177118.Adrian Prantl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177124 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[analyzer] Change the way in which IDC Visitor decides to kick in and make ↵Anna Zaks
sure it attaches in the given edge case In the test case below, the value V is not constrained to 0 in ErrorNode but it is in node N. So we used to fail to register the Suppression visitor. We also need to change the way we determine that the Visitor should kick in because the node N belongs to the ExplodedGraph and might not be on the BugReporter path that the visitor sees. Instead of trying to match the node, turn on the visitor when we see the last node in which the symbol is ‘0’. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177121 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[PR15513/<rdar://problem/13409707>] Template arguments in diagnostics aren't ↵Douglas Gregor
always known at compile time. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177110 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Allocate stack storage for .block_descriptor and captured self at -O0.Adrian Prantl
This way the register allocator will not optimize away the debug info for captured variables. Fixes rdar://problem/12767564 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177086 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[analyzer] Fix scan-build's -stats mode.Jordan Rose
We were failing to match the output line, which led to us collecting no stats at all, which led to a divide-by-zero error. Fixes PR15510. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177084 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[ASan] Make -fsanitize=address imply -fsanitize=init-order (if the latter is ↵Alexey Samsonov
not explicitly disabled). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177061 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Add support for the 'endian' attribute for OpenCL.Joey Gouly
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177035 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Flag that friend function definitions are "late parsed" so thatJohn McCall
template instantiation will still consider them to be definitions if we instantiate the containing class before we get around to parsing the friend. This seems like a legitimate use of "late template parsed" to me, but I'd appreciate it if someone responsible for the MS feature would look over this. This file already appears to access AST nodes directly, which is arguably not kosher in the parser, but the performance of this path matters enough that perpetuating the sin is justifiable. Probably we ought to reconsider this policy for very simple manipulations like this. The reason this entire thing is necessary is that function template instantiation plays some very gross games in order to not associate an instantiated function template with the class it came from unless it's a definition, and the reason *that's* necessary is that the AST currently cannot represent the instantiation history of individual function template declarations, but instead tracks it in common for the entire function template. That probably prevents us from correctly reporting ill-formed calls to ambiguously instantiated friend function templates. rdar://12350696 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177003 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Really fix the MIPS test.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176991 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Attempt to fix test.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176987 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Cause the mips16/nomips16 attribute to be passed to LLVM from ClangReed Kotler
in the LLVM assembly language output. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176971 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13[analyzer] BugReporter - more precise tracking of C++ referencesAnna Zaks
When BugReporter tracks C++ references involved in a null pointer violation, we want to differentiate between a null reference and a reference to a null pointer. In the first case, we want to track the region for the reference location; in the second, we want to track the null pointer. In addition, the core creates CXXTempObjectRegion to represent the location of the C++ reference, so teach FindLastStoreBRVisitor about it. This helps null pointer suppression to kick in. (Patch by Anna and Jordan.) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176969 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13[analyzer] Handle Objc Fast enumeration for "loop is executed 0 times".Ted Kremenek
Fixes <rdar://problem/12322528> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176965 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13relax check to allow for attributes (fix buildbot for elf-ppc64)Adrian Prantl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176954 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Add llvm-symbolizer as test dependency.Evgeniy Stepanov
It is required when building tests with ASan or MSan. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176942 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Set symbolizer path in the test environment.Evgeniy Stepanov
This is needed to get symbolized stack traces when running Clang tests under (A|M)San. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176934 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Tighten up the rules for precise lifetime and documentJohn McCall
the requirements on the ARC optimizer. rdar://13407451 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176924 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Test for LLVM r176911Matt Beaumont-Gay
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176912 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Objective-C: In my last path, also checkFariborz Jahanian
for existence of user setter before issuing the warning about non-synthesizable property. // rdar://13388503 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176906 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Make modules.m test portable, now that autolinking is dependent on whether ↵Ted Kremenek
or not the target uses the integrated assembler. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176902 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Eliminate backend dependency in CFE testcase.Adrian Prantl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176901 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12[driver] Only enable -fmodules-autolink if we are using the integrated ↵Ted Kremenek
assembler. Fixes <rdar://problem/13289240> git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176897 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Force column info to be generated for call expressions so we canAdrian Prantl
differentiate multiple inlined call sites on the same line in the debug info. Fixes rdar://problem/13036237 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176895 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Driver: -ccc-install-dir should affect cc1 -resource-dirJim Grosbach
-ccc-install-dir is supposed to cause the compiler to behave as-if it were installed in the indicated location. It almost does, but misses anything that's relying on the resource directory (libc++ header search, in particular). The resource dir is resolved too early, before command line args are handled. The fix is simply to move handling of the resource dir until after we know if a -ccc-install-dir is present. rdar://13402696 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176894 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Revert "Revert r166370 and r166540 now that Xcode 4.6 has been available for ↵Bob Wilson
a while." This reverts commit 176887. Nico asked for more time to move to Xcode 4.6. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176892 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Add an interesting testcase we already handle correctly.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176890 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Objective-C: Issue warning in couple of obscure casesFariborz Jahanian
when property autosynthesis does not synthesize a property. When property is declared 'readonly' in a super class and is redeclared 'readwrite' in a subclass. When a property autosynthesis causes it to share 'ivar' with another property. // rdar://13388503 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176889 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Move the extern "C" sema tests to a new file.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176888 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Revert r166370 and r166540 now that Xcode 4.6 has been available for a while.Bob Wilson
Those changes were added as a temporary workaround for Xcode 4.5 passing the -Wno-arc-abi option. Xcode 4.6 does not pass that option so this should no longer be necessary. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176887 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Revert "Disallow using -fmodules with -no-integrated-as."Ted Kremenek
Per comment from Benjamin Kramer, this isn't portable (yet). I'll come up with a better fix. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176876 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12We already reported an error forRafael Espindola
extern "C" { void test5_f() { extern int test5_b; } } static float test5_b; This patch makes us report one for extern "C" { void test6_f() { extern int test6_b; } } extern "C" { static float test6_b; } Not because we think the declaration would be extern C, but because of the rule: An entity with C language linkage shall not be declared with the same name as an entity in global scope... We were just not looking past the extern "C" to see if the decl was in global scope. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176875 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Modify comment in user test.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176870 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Correctly compute linkage of decls forward declared extern C.Rafael Espindola
This fixes a crash in namespace { struct X {}; } extern "C" X test2_b; X test2_b before we would assign different linkages to each of the test2_b decls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176869 91177308-0d34-0410-b5e6-96231b3b80d8
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