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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-03-16 18:10:36 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-03-16 18:10:36 -0500 |
| commit | de73f1713f2a3b1b37f797df15077510c22c8176 (patch) | |
| tree | bf84e88885225bb2e9d35f01990ce49cfcd16544 /gcc | |
| parent | d3e0f18932563d067a7a35555d94313f1d675ce6 (diff) | |
| download | gcc-de73f1713f2a3b1b37f797df15077510c22c8176.zip gcc-de73f1713f2a3b1b37f797df15077510c22c8176.tar.gz gcc-de73f1713f2a3b1b37f797df15077510c22c8176.tar.bz2 | |
(warn_if_unused_value, case SAVE_EXPR): New case.
(warn_if_unused_value, case NOP_EXPR): OK if CALL_EXPR inside.
From-SVN: r9196
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/stmt.c | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -1710,6 +1710,9 @@ warn_if_unused_value (exp) /* For a binding, warn if no side effect within it. */ return warn_if_unused_value (TREE_OPERAND (exp, 1)); + case SAVE_EXPR: + return warn_if_unused_value (TREE_OPERAND (exp, 1)); + case TRUTH_ORIF_EXPR: case TRUTH_ANDIF_EXPR: /* In && or ||, warn if 2nd operand has no side effect. */ @@ -1744,7 +1747,8 @@ warn_if_unused_value (exp) while (TREE_CODE (tem) == CONVERT_EXPR || TREE_CODE (tem) == NOP_EXPR) tem = TREE_OPERAND (tem, 0); - if (TREE_CODE (tem) == MODIFY_EXPR || TREE_CODE (tem) == INIT_EXPR) + if (TREE_CODE (tem) == MODIFY_EXPR || TREE_CODE (tem) == INIT_EXPR + || TREE_CODE (tem) == CALL_EXPR) return 0; } goto warn; |