Commit Graph

5 Commits

Author SHA1 Message Date
Bill Wendling b76219b590 [clang][Sema] Use correct array size for diagnostic
The diagnostic was confusing and reporting that an array contains far
more elements than it is defined to have, due to casting.

For example, this code:

  double foo[4096];
  ((char*)foo)[sizeof(foo)];

warns that the "index 32768 is past the end of the array (which contains
32768 elements)."

Reviewed By: serge-sans-paille, aaron.ballman

Differential Revision: https://reviews.llvm.org/D135920
2022-10-20 11:56:49 -07:00
Nico Weber ccec40d9b7 Add -Wstring-plus-int, which warns on "str" + int and int + "str".
It doesn't warn if the integer is known at compile time and within
the bounds of the string.

Discussion: http://comments.gmane.org/gmane.comp.compilers.clang.scm/47203
llvm-svn: 151943
2012-03-02 22:01:22 +00:00
Kaelyn Uhrain 3b74063a8c Add the new unit test that I managed to leave out of r136997 :/
llvm-svn: 137242
2011-08-10 19:49:27 +00:00
Kaelyn Uhrain c45dcd2594 Revert r136046 while fixing handling of e.g. &foo[index_one_past_size]
llvm-svn: 136113
2011-07-26 18:36:36 +00:00
Kaelyn Uhrain 980bdb9dfb Expand array bounds checking to work in the presence of unary & and *,
and to work with pointer arithmetic in addition to array indexing.

The new pointer arithmetic porition of the array bounds checking can be
turned on by -Warray-bounds-pointer-arithmetic (and is off by default).

llvm-svn: 136046
2011-07-26 01:52:28 +00:00