diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/gcc/function.c b/gcc/function.c index 61515e3..6b9fd59 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -978,25 +978,26 @@ assign_temp (tree type_or_decl, int memory_required, if (mode == BLKmode || memory_required) { - HOST_WIDE_INT size = int_size_in_bytes (type); + poly_int64 size; rtx tmp; - /* Zero sized arrays are GNU C extension. Set size to 1 to avoid - problems with allocating the stack space. */ - if (size == 0) - size = 1; - /* Unfortunately, we don't yet know how to allocate variable-sized temporaries. However, sometimes we can find a fixed upper limit on the size, so try that instead. */ - else if (size == -1) + if (!poly_int_tree_p (TYPE_SIZE_UNIT (type), &size)) size = max_int_size_in_bytes (type); + /* Zero sized arrays are a GNU C extension. Set size to 1 to avoid + problems with allocating the stack space. */ + if (known_eq (size, 0)) + size = 1; + /* The size of the temporary may be too large to fit into an integer. */ /* ??? Not sure this should happen except for user silliness, so limit this to things that aren't compiler-generated temporaries. The rest of the time we'll die in assign_stack_temp_for_type. */ - if (decl && size == -1 + if (decl + && !known_size_p (size) && TREE_CODE (TYPE_SIZE_UNIT (type)) == INTEGER_CST) { error ("size of variable %q+D is too large", decl); |