This ICE was caused by an invalid assumption that all BIND_EXPRs have
a non-null BIND_EXPR_BLOCK. In C++ these do exist and are used for
temporaries introduced in expressions that are not full-expressions.
Since they have no block to fix up, the traversal can just ignore
these tree nodes.
gcc/cp/ChangeLog
* parser.cc (fixup_blocks_walker): Check for null BIND_EXPR_BLOCK.
gcc/testsuite/ChangeLog
* g++.dg/gomp/pr111274.C: New test case
---
gcc/cp/parser.cc | 5 ++++-
gcc/testsuite/g++.dg/gomp/pr111274.C | 15 +++++++++++++++
2 files changed, 19 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/g++.dg/gomp/pr111274.C
diff --git a/gcc/cp/parser.cc b/gcc/cp/parser.cc
index 7811d582b07..15a98019a4a 100644
--- a/gcc/cp/parser.cc
+++ b/gcc/cp/parser.cc
@@ -44485,7 +44485,10 @@ fixup_blocks_walker (tree *tp, int *walk_subtrees,
void *dp)
{
tree superblock = *(tree *)dp;
- if (TREE_CODE (*tp) == BIND_EXPR)
+ /* BIND_EXPR_BLOCK may be null if the expression is not a
+ full-expression; if there's no block, no patching is necessary
+ for this node. */
+ if (TREE_CODE (*tp) == BIND_EXPR && BIND_EXPR_BLOCK (*tp))
{
tree block = BIND_EXPR_BLOCK (*tp);
if (superblock)
diff --git a/gcc/testsuite/g++.dg/gomp/pr111274.C
b/gcc/testsuite/g++.dg/gomp/pr111274.C
new file mode 100644
index 00000000000..6d3414fc82c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/gomp/pr111274.C
@@ -0,0 +1,15 @@
+// { dg-do "compile" }
+
+// This example used to ICE in fixup_blocks_walker due to a BIND_EXPR with
+// null BIND_EXPR_BLOCK.
+
+struct _Vector_base {
+ ~_Vector_base();
+};
+int ColumnSmallestLastOrdering_OMP_i_MaxNumThreads,
+ ColumnSmallestLastOrdering_OMP_i_MaxDegree;
+void ColumnSmallestLastOrdering_OMP() {
+#pragma omp for
+ for (int i = 0; i < ColumnSmallestLastOrdering_OMP_i_MaxNumThreads; i++)
+ new _Vector_base[ColumnSmallestLastOrdering_OMP_i_MaxDegree];
+}
--
2.31.1
