diff options
| -rw-r--r-- | gcc/tree-ssa-forwprop.cc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-ssa-forwprop.cc b/gcc/tree-ssa-forwprop.cc index 06f19868ade..0326e6733e8 100644 --- a/gcc/tree-ssa-forwprop.cc +++ b/gcc/tree-ssa-forwprop.cc @@ -1231,14 +1231,14 @@ simplify_builtin_call (gimple_stmt_iterator *gsi_p, tree callee2) tree size = gimple_call_arg (stmt2, 2); /* Size must be a constant which is <= UNITS_PER_WORD and <= the string length. */ - if (TREE_CODE (size) != INTEGER_CST || integer_zerop (size)) + if (TREE_CODE (size) != INTEGER_CST) break; if (!tree_fits_uhwi_p (size)) break; unsigned HOST_WIDE_INT sz = tree_to_uhwi (size); - if (sz > UNITS_PER_WORD || sz >= slen) + if (sz == 0 || sz > UNITS_PER_WORD || sz >= slen) break; tree ch = gimple_call_arg (stmt2, 1); |