On Mon, 2017-12-11 at 18:37 -0500, Jason Merrill wrote:
On 11/10/2017 04:45 PM, David Malcolm wrote:
gcc/c-family/ChangeLog:
* c-warn.c (sizeof_pointer_memaccess_warning): Strip any
location
wrappers from src and dest.
Here the existing calls to tree_strip_nop_conversions ought to
handle
the wrappers.
They don't; when EXP is a VIEW_CONVERT_EXPR wrapper around a VAR_DECL...
11887 static inline bool
11888 tree_nop_conversion (const_tree exp)
11889 {
11890 tree outer_type, inner_type;
11891
11892 if (!CONVERT_EXPR_P (exp)
11893 && TREE_CODE (exp) != NON_LVALUE_EXPR)
11894 return false;
...tree_nop_conversion bails out at this "return false;", and hence
tree_strip_nop_conversions simply returns the wrapper that was passed
in.