diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2017-01-16 22:35:30 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-01-16 22:35:30 +0100 |
| commit | 98e92fb2104bcee038c0de4a116424b093001ae6 (patch) | |
| tree | ee97ac356e8734e988a1ffa5b6f8e942425a0f7c /gcc/gimplify.c | |
| parent | e1bcfb924ae9b6dffd7757a6f1a193793af58c2f (diff) | |
| download | gcc-98e92fb2104bcee038c0de4a116424b093001ae6.zip gcc-98e92fb2104bcee038c0de4a116424b093001ae6.tar.gz gcc-98e92fb2104bcee038c0de4a116424b093001ae6.tar.bz2 | |
re PR middle-end/79089 (error: incorrect sharing of tree nodes)
PR c/79089
* gimplify.c (gimplify_init_constructor): If want_value and
object == lhs, unshare lhs to avoid invalid tree sharing. Formatting
fix.
* gcc.c-torture/compile/pr79089.c: New test.
From-SVN: r244507
Diffstat (limited to 'gcc/gimplify.c')
| -rw-r--r-- | gcc/gimplify.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/gimplify.c b/gcc/gimplify.c index e1e9ce9e..2777a23 100644 --- a/gcc/gimplify.c +++ b/gcc/gimplify.c @@ -4586,8 +4586,8 @@ gimplify_init_constructor (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, } object = TREE_OPERAND (*expr_p, 0); - ctor = TREE_OPERAND (*expr_p, 1) = - optimize_compound_literals_in_ctor (TREE_OPERAND (*expr_p, 1)); + ctor = TREE_OPERAND (*expr_p, 1) + = optimize_compound_literals_in_ctor (TREE_OPERAND (*expr_p, 1)); type = TREE_TYPE (ctor); elts = CONSTRUCTOR_ELTS (ctor); ret = GS_ALL_DONE; @@ -4911,6 +4911,8 @@ gimplify_init_constructor (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p, { tree lhs = TREE_OPERAND (*expr_p, 0); tree rhs = TREE_OPERAND (*expr_p, 1); + if (want_value && object == lhs) + lhs = unshare_expr (lhs); gassign *init = gimple_build_assign (lhs, rhs); gimplify_seq_add_stmt (pre_p, init); } |