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| author | Jim Wilson <wilson@gcc.gnu.org> | 1993-08-08 15:48:15 -0700 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1993-08-08 15:48:15 -0700 |
| commit | 591b15bb1c185e2364e4e2ed65d1bebb48fbfb2b (patch) | |
| tree | 27ba05898fc3296b668be3e7212815b2f2be54e9 | |
| parent | 3de13334ba84c74f6c7cb0c0e6524d74d32734aa (diff) | |
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(expand_increment): Call save_expr on inner expression if
it is itself an increment expression.
From-SVN: r5115
| -rw-r--r-- | gcc/expr.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -6940,6 +6940,12 @@ expand_increment (exp, post) && (TREE_CODE (TREE_OPERAND (incremented, 0)) != INDIRECT_REF || DECL_BIT_FIELD (TREE_OPERAND (incremented, 1))))) incremented = stabilize_reference (incremented); + /* Nested *INCREMENT_EXPRs can happen in C++. We must force innermost + ones into save exprs so that they don't accidentally get evaluated + more than once by the code below. */ + if (TREE_CODE (incremented) == PREINCREMENT_EXPR + || TREE_CODE (incremented) == PREDECREMENT_EXPR) + incremented = save_expr (incremented); /* Compute the operands as RTX. Note whether OP0 is the actual lvalue or a copy of it: |