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c_parser_binary_expression was using build2 to create a temporary holder for binary expression that c_parser_atomic and c_finish_omp_atomic can then handle. The latter performs then all the needed checking. Unfortunately, build2 performs some checking too, e.g. PLUS_EXPR vs. POINTER_PLUS_EXPR or matching types of the arguments, nothing we can guarantee at the parsing time. So we need something like C++ build_min_nt*. This patch implements that inline. 2020-11-24 Jakub Jelinek <jakub@redhat.com> PR c/97958 * c-parser.c (c_parser_binary_expression): For omp atomic binary expressions, use make_node instead of build2 to avoid checking build2 performs. * c-c++-common/gomp/pr97958.c: New test.
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