diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 94db6a3..46b14bc 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -2491,13 +2491,15 @@ expand_builtin_stpcpy (arglist, target, mode) return 0; else { + tree newarglist; tree len = c_strlen (TREE_VALUE (TREE_CHAIN (arglist))); if (len == 0) return 0; len = fold (size_binop (PLUS_EXPR, len, ssize_int (1))); - chainon (arglist, build_tree_list (NULL_TREE, len)); - return expand_builtin_memcpy (arglist, target, mode, /*endp=*/2); + newarglist = copy_list (arglist); + chainon (newarglist, build_tree_list (NULL_TREE, len)); + return expand_builtin_memcpy (newarglist, target, mode, /*endp=*/2); } } |