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Re: [RFTesting] New POINTER_DIFF_EXPR
On Mon, 20 Nov 2017, Marc Glisse wrote:
new version, regtested on powerpc64le-unknown-linux-gnu. The front-end
parts are up for review.
2017-10-28 Marc Glisse <marc.glisse@inria.fr>
gcc/c/
* c-fold.c (c_fully_fold_internal): Handle POINTER_DIFF_EXPR.
* c-typeck.c (pointer_diff): Use POINTER_DIFF_EXPR.
gcc/c-family/
* c-pretty-print.c (pp_c_additive_expression,
c_pretty_printer::expression): Handle POINTER_DIFF_EXPR.
gcc/cp/
* constexpr.c (cxx_eval_constant_expression,
potential_constant_expression_1): Handle POINTER_DIFF_EXPR.
* cp-gimplify.c (cp_fold): Likewise.
* error.c (dump_expr): Likewise.
* typeck.c (pointer_diff): Use POINTER_DIFF_EXPR.
I'm afraid this broke building Wine.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83164
ddeml.c: In function ʽDDEML_AddThunkʼ:
ddeml.c:181:28: error: type mismatch in pointer diff expression
static struct ddeml_thunk* DDEML_AddThunk(DWORD instId, DWORD pfn16)
^~~~~~~~~~~~~~
int
struct HDDEDATA__ * (*<T1c96>) (DWORD, UINT, UINT, struct HCONV__ *,
struct HSZ__ *, struct HSZ__ *, struct HDDEDATA__ *, ULONG_PTR, ULONG_PTR)
DWORD *
_6 = WDML_InvokeCallback16 - _5;
ddeml.c:181:28: internal compiler error: verify_gimple failed
David, in addition to the ICE diagnostics also looks, umm,
rather confusing?
Gerald