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Diffstat (limited to 'gcc/tree-ssa-uninit.c')
| -rw-r--r-- | gcc/tree-ssa-uninit.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c index 1344854..dfee0ea 100644 --- a/gcc/tree-ssa-uninit.c +++ b/gcc/tree-ssa-uninit.c @@ -212,6 +212,14 @@ warn_uninitialized_vars (bool warn_possibly_uninitialized) can warn about. */ FOR_EACH_SSA_USE_OPERAND (use_p, stmt, op_iter, SSA_OP_USE) { + /* BIT_INSERT_EXPR first operand should not be considered + a use for the purpose of uninit warnings. */ + if (gassign *ass = dyn_cast <gassign *> (stmt)) + { + if (gimple_assign_rhs_code (ass) == BIT_INSERT_EXPR + && use_p->use == gimple_assign_rhs1_ptr (ass)) + continue; + } use = USE_FROM_PTR (use_p); if (always_executed) warn_uninit (OPT_Wuninitialized, use, SSA_NAME_VAR (use), |