diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 11 |
1 files changed, 6 insertions, 5 deletions
@@ -4151,9 +4151,10 @@ store_constructor (exp, target, align, cleared, size) /* If the constructor has fewer fields than the structure or if we are initializing the structure to mostly zeros, clear the whole structure first. */ - else if ((list_length (CONSTRUCTOR_ELTS (exp)) - != list_length (TYPE_FIELDS (type))) - || mostly_zeros_p (exp)) + else if (size > 0 + && ((list_length (CONSTRUCTOR_ELTS (exp)) + != list_length (TYPE_FIELDS (type))) + || mostly_zeros_p (exp))) { if (! cleared) clear_storage (target, GEN_INT (size), @@ -4339,7 +4340,7 @@ store_constructor (exp, target, align, cleared, size) || 4 * zero_count >= 3 * count) need_to_clear = 1; } - if (need_to_clear) + if (need_to_clear && size > 0) { if (! cleared) clear_storage (target, GEN_INT (size), @@ -4519,7 +4520,7 @@ store_constructor (exp, target, align, cleared, size) bzero/memset), and set the bits we want. */ /* Check for all zeros. */ - if (elt == NULL_TREE) + if (elt == NULL_TREE && size > 0) { if (!cleared) clear_storage (target, GEN_INT (size), |