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| author | Meador Inge <meadori@codesourcery.com> | 2013-09-03 17:04:39 +0000 |
|---|---|---|
| committer | Meador Inge <meadori@gcc.gnu.org> | 2013-09-03 17:04:39 +0000 |
| commit | db8800bc5f38a732fd5a33d6bfbbff71b186076d (patch) | |
| tree | 8d99f577f74c2919f770025fedc5c5db62626d3f /gcc | |
| parent | d7fd3fde96379ee946284609d3f6c14fce236f52 (diff) | |
| download | gcc-db8800bc5f38a732fd5a33d6bfbbff71b186076d.zip gcc-db8800bc5f38a732fd5a33d6bfbbff71b186076d.tar.gz gcc-db8800bc5f38a732fd5a33d6bfbbff71b186076d.tar.bz2 | |
revert: tree-vrp.c (check_array_ref): Bail out on zero-length arrays.
gcc/
2013-09-03 Meador Inge <meadori@codesourcery.com>
Revert:
2013-08-30 Meador Inge <meadori@codesourcery.com>
* tree-vrp.c (check_array_ref): Bail out on zero-length arrays.
gcc/testsuite/
2013-09-03 Meador Inge <meadori@codesourcery.com>
Revert:
2013-08-30 Meador Inge <meadori@codesourcery.com>
* gcc.dg/Warray-bounds-11.c: New testcase.
From-SVN: r202228
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/Warray-bounds-11.c | 12 | ||||
| -rw-r--r-- | gcc/tree-vrp.c | 5 |
4 files changed, 18 insertions, 15 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5b1adf0..e146e2a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2013-09-03 Meador Inge <meadori@codesourcery.com> + + Revert: + + 2013-08-30 Meador Inge <meadori@codesourcery.com> + + * tree-vrp.c (check_array_ref): Bail out on zero-length arrays. + 2013-09-03 David Edelsohn <dje.gcc@gmail.com> * config/rs6000/rs6000.h (ASM_OUTPUT_DEF_FROM_DECLS): Emit lglobl for diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 935b3c3..8712a19 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,11 @@ +2013-09-03 Meador Inge <meadori@codesourcery.com> + + Revert: + + 2013-08-30 Meador Inge <meadori@codesourcery.com> + + * gcc.dg/Warray-bounds-11.c: New testcase. + 2013-09-03 David Edelsohn <dje.gcc@gmail.com> * lib/target-supports.exp (check_weak_available): Return true for AIX. diff --git a/gcc/testsuite/gcc.dg/Warray-bounds-11.c b/gcc/testsuite/gcc.dg/Warray-bounds-11.c deleted file mode 100644 index 130175d..0000000 --- a/gcc/testsuite/gcc.dg/Warray-bounds-11.c +++ /dev/null @@ -1,12 +0,0 @@ -/* { dg-do compile } */ -/* { dg-options "-O2 -Warray-bounds -std=gnu99" } */ -/* Test zero-length arrays for GNU C. */ - -unsigned int a[] = { }; -unsigned int size_a; - -int test(void) -{ - /* This should not warn. */ - return size_a ? a[0] : 0; -} diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index 062e03c..d5548ff 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -6137,10 +6137,9 @@ check_array_ref (location_t location, tree ref, bool ignore_off_by_one) low_sub = up_sub = TREE_OPERAND (ref, 1); up_bound = array_ref_up_bound (ref); - /* Can not check flexible arrays or zero-length arrays. */ + /* Can not check flexible arrays. */ if (!up_bound - || TREE_CODE (up_bound) != INTEGER_CST - || tree_int_cst_equal (up_bound, integer_minus_one_node)) + || TREE_CODE (up_bound) != INTEGER_CST) return; /* Accesses to trailing arrays via pointers may access storage |