https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65818
--- Comment #9 from dave.anglin at bell dot net --- On 2015-04-22, at 12:40 PM, vries at gcc dot gnu.org wrote: > this patch is more conservative: > ... > diff --git a/gcc/gimplify.c b/gcc/gimplify.c > index 7786e16..e23f510 100644 > --- a/gcc/gimplify.c > +++ b/gcc/gimplify.c > @@ -9336,7 +9336,12 @@ gimplify_va_arg_internal (tree valist, tree type, > location_t loc, > else > gimplify_expr (&valist, pre_p, post_p, is_gimple_min_lval, fb_lvalue); > > - return targetm.gimplify_va_arg_expr (valist, type, pre_p, post_p); > + tree expr = targetm.gimplify_va_arg_expr (valist, type, pre_p, post_p); > + gcc_assert (TREE_CODE (expr) == MEM_REF); > + if (!is_gimple_mem_ref_addr (TREE_OPERAND (expr, 0))) > + gimplify_expr (&TREE_OPERAND (expr, 0), pre_p, post_p, > + is_gimple_mem_ref_addr, fb_rvalue); > + return expr; > } > > /* Gimplify __builtin_va_arg, aka VA_ARG_EXPR, which is not really a This patch has the following new failure: /test/gnu/gcc/gcc/gcc/testsuite/g++.dg/pr65802.C: In function 'void fn1()': /test/gnu/gcc/gcc/gcc/testsuite/g++.dg/pr65802.C:20:23: error: impossible constraint in 'asm' FAIL: g++.dg/pr65802.C -std=gnu++98 (test for excess errors) FAIL: g++.dg/pr65802.C -std=gnu++11 (test for excess errors) FAIL: g++.dg/pr65802.C -std=gnu++14 (test for excess errors) -- John David Anglin dave.ang...@bell.net
