https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83164
Bug ID: 83164
Summary: [8 regression] internal compiler error: verify_gimple
failed
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: gerald at pfeifer dot com
CC: marc.glisse at normalesup dot org
Target Milestone: ---
Host: i586-unknown-freebsd10.4
Created attachment 42718
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42718&action=edit
Preprocessed source file
This one's easy to reproduce, no specific compiler options are required:
% $GCC -c -o ddeml.o ddeml.i
ddeml.c: In function ‘DDEML_AddThunk’:
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
Also the diagnostics look quite odd, don't they?
I believe this was introduced by the following?
2017-10-28 Marc Glisse <marc.gli...@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.
