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Author SHA1 Message Date
George Burgess IV f9013bf8f0 Don't let EvaluationModes dictate whether an invalid base is OK 
What we want to actually control this behavior is something more local
than an EvalutationMode. Please see the linked revision for more
discussion on why/etc.

This fixes PR31843.

Differential Revision: https://reviews.llvm.org/D29469

llvm-svn: 294800
 2017-02-10 22:52:29 +00:00
George Burgess IV 4168d75888 [ExprConstant] Fix PR28314 - crash while evluating objectsize. 
This fixes a crash in code like:
```
struct A {
  struct B b;
  char c[1];
}

int foo(struct A* a) { return __builtin_object_size(a->c, 0); }
```

We wouldn't check whether the structs we were examining were invalid,
and getting the layout of an invalid struct is (unsurprisingly) A Bad
Thing. With this patch, we'll always return conservatively if we see an
invalid struct, since I'm assuming the presence of an invalid struct
means that our compilation failed (so having a conservative result isn't
such a big deal).

llvm-svn: 273911
 2016-06-27 19:40:41 +00:00
Steven Wu 566c14eccd Fix the argument index error of __builtin___memccpy_chk 
memccpy_check should have source and dest size at arg 3 and 4
rdar://18431336

llvm-svn: 218367
 2014-09-24 04:37:33 +00:00
Hans Wennborg 38277f79bb Attempt to fix Sema/builtin-object-size.c after r218258 
The type of size_t varies between targets.

llvm-svn: 218288
 2014-09-23 00:02:36 +00:00
Fariborz Jahanian a3d8879be7 Fix evatuated value of __builtin_object_size according to its 
'type'  argument when it cannot be determined which objects ptr 
points to at compile time. rdar://18334276

llvm-svn: 218258
 2014-09-22 17:11:59 +00:00
Fariborz Jahanian 3e6a0be4c4 Patch to check at compile time for overflow when 
__builtin___memcpy_chk and similar builtins are
being used. Patch by Jacques Fortier (with added 
clang tests).  rdar://11076881

llvm-svn: 218063
 2014-09-18 17:58:27 +00:00
Daniel Dunbar 8fbe78f6fc Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. 
- This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446
 2009-12-15 20:14:24 +00:00
Daniel Dunbar 8b57697954 Eliminate &&s in tests. 
- 'for i in $(find . -type f); do sed -e 's#\(RUN:.*[^ ]\) *&& *$#\1#g' $i | FileUpdate $i; done', for the curious.

llvm-svn: 86430
 2009-11-08 01:45:36 +00:00
Daniel Dunbar a45cf5b6b0 Rename clang to clang-cc. 
Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
 2009-03-24 02:24:46 +00:00
Argyrios Kyrtzidis 72d8149a1e Append the test runs with '&&'. 
llvm-svn: 57085
 2008-10-05 00:08:56 +00:00
Chris Lattner 037379d767 Fix rdar://6252231 - cannot call vsnprintf with va_list on x86_64, 
by decaying __builtin_va_list's type when forming builtins.  On
x86-64 (and other targets) __builtin_va_list is a typedef for
an array.

llvm-svn: 56768
 2008-09-28 06:05:35 +00:00
Daniel Dunbar 20e5db77a3 Add two test cases for builtins (mostly related to object size 
builtins).

llvm-svn: 55736
 2008-09-03 21:17:21 +00:00