diff options
Diffstat (limited to 'gcc/attribs.cc')
| -rw-r--r-- | gcc/attribs.cc | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/attribs.cc b/gcc/attribs.cc index 27dea74..095def4 100644 --- a/gcc/attribs.cc +++ b/gcc/attribs.cc @@ -2456,6 +2456,36 @@ init_attr_rdwr_indices (rdwr_map *rwm, tree attrs) } } +/* Get the LEVEL of the strict_flex_array for the ARRAY_FIELD based on the + values of attribute strict_flex_array and the flag_strict_flex_arrays. */ +unsigned int +strict_flex_array_level_of (tree array_field) +{ + gcc_assert (TREE_CODE (array_field) == FIELD_DECL); + unsigned int strict_flex_array_level = flag_strict_flex_arrays; + + tree attr_strict_flex_array + = lookup_attribute ("strict_flex_array", DECL_ATTRIBUTES (array_field)); + /* If there is a strict_flex_array attribute attached to the field, + override the flag_strict_flex_arrays. */ + if (attr_strict_flex_array) + { + /* Get the value of the level first from the attribute. */ + unsigned HOST_WIDE_INT attr_strict_flex_array_level = 0; + gcc_assert (TREE_VALUE (attr_strict_flex_array) != NULL_TREE); + attr_strict_flex_array = TREE_VALUE (attr_strict_flex_array); + gcc_assert (TREE_VALUE (attr_strict_flex_array) != NULL_TREE); + attr_strict_flex_array = TREE_VALUE (attr_strict_flex_array); + gcc_assert (tree_fits_uhwi_p (attr_strict_flex_array)); + attr_strict_flex_array_level = tree_to_uhwi (attr_strict_flex_array); + + /* The attribute has higher priority than flag_struct_flex_array. */ + strict_flex_array_level = attr_strict_flex_array_level; + } + return strict_flex_array_level; +} + + /* Return the access specification for a function parameter PARM or null if the current function has no such specification. */ |