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2010-04-09Remove fixit for string literal comparison. Telling the user to use ↵Ted Kremenek
'strcmp' is bad, and we don't have enough information to tell them how to use 'strncmp'. Instead, change the diagnostic to indicate they should use 'strncmp'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Improve diagnostics like "initializing <type> from an expression ofDouglas Gregor
type..." with "initializing <type> with an expression of type...", which reads better. Thanks to John for the improved wording. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100873 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Don't warn about unused static functions if they are marked with Chris Lattner
attr constructor or destructor. Patch by Jean-Daniel Dupas! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100870 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-09Improve diagnostics when we fail to convert from a source type to aDouglas Gregor
destination type for initialization, assignment, parameter-passing, etc. The main issue fixed here is that we used rather confusing wording for diagnostics such as t.c:2:9: warning: initializing 'char const [2]' discards qualifiers, expected 'char *' [-pedantic] char *name = __func__; ^ ~~~~~~~~ We're not initializing a 'char const [2]', we're initializing a 'char *' with an expression of type 'char const [2]'. Similar problems existed for other diagnostics in this area, so I've normalized them all with more precise descriptive text to say what we're initializing/converting/assigning/etc. from and to. The warning for the code above is now: t.c:2:9: warning: initializing 'char *' from an expression of type 'char const [2]' discards qualifiers [-pedantic] char *name = __func__; ^ ~~~~~~~~ Fixes <rdar://problem/7447179>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Use '%clang_cc1' instead of '%clang' to make the warning output more ↵Ted Kremenek
consistent across platforms (for this test). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Downgrade the "declaration does not declare anything" error to aDouglas Gregor
warning. It's not harmful to have such pointless declarations, and GCC does not diagnose this issue consistently. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100814 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Match GCC's behavior and do not include '-Wunused-parameter' in '-Wunused'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100810 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Update test case.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100801 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-08Include all warnings under '-Wunused' in '-Wmost' and '-Wall'.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100786 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07rename llvm::llvm_report_error -> llvm::report_fatal_errorChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100708 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Don't emit an 'unused expression' warning for '||' and '&&' expressions that ↵Ted Kremenek
contain assignments or similar side-effects. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100676 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Teach -Wsign-compare to treat 1 << blah as "idiomatically non-negative".John McCall
Fixes a spurious warning in LLVM. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100595 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06Devote a special diagnostic to the typoJohn McCall
(void*) someFunction(5, 10, 15, 20); where the cast is presumably meant to be to 'void'. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100574 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Support __attribute__((unused)) on types. This suddenly started firingJohn McCall
a lot for me on selfhosts, I dunno why. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Fix PR6327: restore invariants when there's a parse error in an initializer.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29Support __attribute__((packed)) (along with other attributes) at theDouglas Gregor
end of a struct/class/union in C++, from Justin Bogner! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99811 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25Fix two bugs in format-string checking:Ted Kremenek
(1) Do not assume the data arguments start after the format string (2) Do not use the fact that a function is variadic to treat it like a va_list printf function Fixes PR 6697. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99480 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24Control warnings about GNU extensions with -Wgnu, which has a subgroupDouglas Gregor
for GNU designated-initializer syntax (-Wgnu-designator). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99421 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23Ignore a more comprehensive set of gcc-special format attributes.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99277 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23For forward-declared static inline functions, delay CFG-based warnings until weTed Kremenek
encounter a definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99243 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-23Only perform CFG-based warnings on 'static inline' functions thatTed Kremenek
are called (transitively) by regular functions/blocks within a translation untion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22(re)implement PR6542, accepting and discarding the __gcc_tdiag__Chris Lattner
format attribute specifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99213 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22merge some tests.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99212 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22rename testChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99211 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22merge two tests.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99209 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22rename test.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99208 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22move a test to a more appropriate directoryChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99200 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-22-Wshadow should only warn about parameter declarations when we'reJohn McCall
entering a function or block definition, not on every single declaration. Unfortunately we don't have previous-lookup results around when it's time to make this decision, so we have to redo the lookup. The alternative is to use delayed diagnostics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99172 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-21Fix PR6618.Rafael Espindola
If a struct has an invalid field, mark it as invalid. Also avoid producing errors about incomplete types that are invalid. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20Add sse4.2 support to this test.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99052 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20Implement -Wshadow for parameter declarations as well.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-20Add include for smmintrin.h to this test.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99019 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19Pretty-print anonymous types using their kind and presumed location.John McCall
Fixes PR6643. Patch by Mike M! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98946 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-17Remove warning about shadowing a built-in; built-ins aren't actuallyDouglas Gregor
considered to be a part of the translation unit unless they're named in a way that brings them into existence. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98729 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Issue error when a byref array is accessed in a blockFariborz Jahanian
literal. Fixes radar 7760213. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98693 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Forgot the testcases.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98685 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15Add support for -Wwrite-strings. Patch by Mike M! Fixes PR 4804.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98541 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12Check compatibility of vector types using their canonicalizations.John McCall
Fixes an assertion arising C overload analysis, but really I can't imagine that this wouldn't cause a thousand other uncaught failures. Fixes PR6600. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98400 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-12Improve the unused-value check to look into comma expressions and filter outJohn McCall
voids in sub-expressions. Patch by Mike M! Fixes PR4806. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98335 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Warn about comparing an unsigned expression with 0 in tautological ways.John McCall
Patch by mikem! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Remember the PR number.John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98276 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11Implement -Wmissing-field-initializers. Patch by mikem!John McCall
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98275 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-07Implement missing-braces warning and add a test case.Tanya Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97893 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06Allow use of byref (__block attributed) arrays insideFariborz Jahanian
the block. Fixes radar 7671883. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97863 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Emit warning on indirect goto that potentially violates Chris Lattner
scope instead of error, PR6517 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97826 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05address PR6502 by downgrading the scope checker's addressChris Lattner
of label error to a warning controllable with a -W flag. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97815 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Keep an explicit stack of function and block scopes, each element ofDouglas Gregor
which has the label map, switch statement stack, etc. Previously, we had a single set of maps in Sema (for the function) along with a stack of block scopes. However, this lead to funky behavior with nested functions, e.g., in the member functions of local classes. The explicit-stack approach is far cleaner, and we retain a 1-element cache so that we're not malloc/free'ing every time we enter a function. Fixes PR6382. Also, tweaked the unused-variable warning suppression logic to look at errors within a given Scope rather than within a given function. The prior code wasn't looking at the right number-of-errors count when dealing with blocks, since the block's count would be deallocated before we got to ActOnPopScope. This approach works with nested blocks/functions, and gives tighter error recovery. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97518 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01fix PR5933: don't warn about unused variables if a function has other errors ↵Chris Lattner
in it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97498 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Allow a '0' precision in format strings (as the man page says it is okay).Ted Kremenek
Fixes <rdar://problem/7700339>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97482 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01Don't warn about case-value conversions from a negative value to aDouglas Gregor
larger unsigned value, since this is implementation-defined behavior. (We previously suppressed this warning when converting from a signed value to an unsigned value of the same size). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97430 91177308-0d34-0410-b5e6-96231b3b80d8
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