diff options
Diffstat (limited to 'gcc/tree-object-size.c')
| -rw-r--r-- | gcc/tree-object-size.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/gcc/tree-object-size.c b/gcc/tree-object-size.c index 14cb435..488676e 100644 --- a/gcc/tree-object-size.c +++ b/gcc/tree-object-size.c @@ -210,11 +210,17 @@ addr_object_size (struct object_size_info *osi, const_tree ptr, } if (sz != unknown[object_size_type]) { - offset_int dsz = wi::sub (sz, mem_ref_offset (pt_var)); - if (wi::neg_p (dsz)) - sz = 0; - else if (wi::fits_uhwi_p (dsz)) - sz = dsz.to_uhwi (); + offset_int mem_offset; + if (mem_ref_offset (pt_var).is_constant (&mem_offset)) + { + offset_int dsz = wi::sub (sz, mem_offset); + if (wi::neg_p (dsz)) + sz = 0; + else if (wi::fits_uhwi_p (dsz)) + sz = dsz.to_uhwi (); + else + sz = unknown[object_size_type]; + } else sz = unknown[object_size_type]; } |