GCC modified for the FreeChainXenon project
8cccdc2176
This test shows that we cannot clear *walk_subtrees in
cp_fold_immediate_r when we're in_immediate_context, because that
checks even e.g. sk_template_parms, and, as the comment says, affects
cp_fold_r as well. Here we had an expression with
min ((long int) VIEW_CONVERT_EXPR<long unsigned int>(bytecount), (long int) <<< Unknown tree: sizeof_expr
(int) <<< error >>> >>>)
as its sub-expression, and we never evaluated that into
min ((long int) bytecount, 4)
so the SIZEOF_EXPR leaked into the middle end. We need to make sure
we are calling cp_fold on the SIZEOF_EXPR.
PR c++/112869
gcc/cp/ChangeLog:
* cp-gimplify.cc (cp_fold_immediate_r): Check cp_unevaluated_operand
and DECL_IMMEDIATE_FUNCTION_P rather than in_immediate_context.
gcc/testsuite/ChangeLog:
* g++.dg/template/sizeof18.C: New test.
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