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This patch resolves PR c/119651 and PR c/123472 P4 regressions. 2026-02-26 Roger Sayle <roger@nextmovesoftware.com> gcc/ChangeLog PR c/119651 PR c/123472 * fold-const.cc (tree_nonzero_bits): Rename the original as a static function taking an additional precision parameter. Make this implementation robust to error_mark_node. Preserve the original API by checking for error_operand_p before invoking the static helper function. gcc/testsuite/ChangeLog PR c/119651 PR c/123472 * gcc.dg/pr119651.c: New test case. * gcc.dg/pr123472.c: Likewise.
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