diff options
Diffstat (limited to 'contrib/gcc/c-common.c')
| -rw-r--r-- | contrib/gcc/c-common.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/contrib/gcc/c-common.c b/contrib/gcc/c-common.c index b650a48..fa89614 100644 --- a/contrib/gcc/c-common.c +++ b/contrib/gcc/c-common.c @@ -2995,16 +2995,16 @@ c_sizeof_or_alignof_type (tree type, bool is_sizeof, int complain) } /* Implement the __alignof keyword: Return the minimum required - alignment of EXPR, measured in bytes. For VAR_DECL's and - FIELD_DECL's return DECL_ALIGN (which can be set from an - "aligned" __attribute__ specification). */ + alignment of EXPR, measured in bytes. For VAR_DECLs, + FUNCTION_DECLs and FIELD_DECLs return DECL_ALIGN (which can be set + from an "aligned" __attribute__ specification). */ tree c_alignof_expr (tree expr) { tree t; - if (TREE_CODE (expr) == VAR_DECL) + if (VAR_OR_FUNCTION_DECL_P (expr)) t = size_int (DECL_ALIGN_UNIT (expr)); else if (TREE_CODE (expr) == COMPONENT_REF @@ -4809,12 +4809,24 @@ handle_aligned_attribute (tree *node, tree ARG_UNUSED (name), tree args, TYPE_ALIGN (*type) = (1 << i) * BITS_PER_UNIT; TYPE_USER_ALIGN (*type) = 1; } - else if (TREE_CODE (decl) != VAR_DECL + else if (! VAR_OR_FUNCTION_DECL_P (decl) && TREE_CODE (decl) != FIELD_DECL) { error ("alignment may not be specified for %q+D", decl); *no_add_attrs = true; } + else if (TREE_CODE (decl) == FUNCTION_DECL + && DECL_ALIGN (decl) > (1 << i) * BITS_PER_UNIT) + { + if (DECL_USER_ALIGN (decl)) + error ("alignment for %q+D was previously specified as %d " + "and may not be decreased", decl, + DECL_ALIGN (decl) / BITS_PER_UNIT); + else + error ("alignment for %q+D must be at least %d", decl, + DECL_ALIGN (decl) / BITS_PER_UNIT); + *no_add_attrs = true; + } else { DECL_ALIGN (decl) = (1 << i) * BITS_PER_UNIT; |
