diff options
Diffstat (limited to 'gcc/c-decl.c')
| -rw-r--r-- | gcc/c-decl.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 0521aa7..826608b 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -4518,14 +4518,17 @@ grokdeclarator (declarator, declspecs, decl_context, initialized) if (type_quals) type = c_build_qualified_type (type, type_quals); -#if 0 - /* Don't clear these; leave them set so that the array type - or the variable is itself const or volatile. */ - type_quals = TYPE_UNQUALIFIED; -#endif - if (size_varies) C_TYPE_VARIABLE_SIZE (type) = 1; + + /* The GCC extension for zero-length arrays differs from + ISO flexible array members in that sizeof yields zero. */ + if (size && integer_zerop (size)) + { + layout_type (type); + TYPE_SIZE (type) = bitsize_zero_node; + TYPE_SIZE_UNIT (type) = size_zero_node; + } } else if (TREE_CODE (declarator) == CALL_EXPR) { |