Bootstrapped/regtested on x86_64-pc-linux-gnu, ok for trunk?
-- >8 --
Here we ICE in c_expr_sizeof_expr on an erroneous expr.value. The
code checks for expr.value == error_mark_node but here the e_m_n is
wrapped in a C_MAYBE_CONST_EXPR. I don't think we should have created
such a tree, so let's return earlier in c_cast_expr.
PR c/115642
gcc/c/ChangeLog:
* c-typeck.cc (c_cast_expr): Return error_mark_node if build_c_cast
failed.
gcc/testsuite/ChangeLog:
* gcc.dg/noncompile/sizeof-1.c: New test.
---
gcc/c/c-typeck.cc | 3 +++
gcc/testsuite/gcc.dg/noncompile/sizeof-1.c | 7 +++++++
2 files changed, 10 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/noncompile/sizeof-1.c
diff --git a/gcc/c/c-typeck.cc b/gcc/c/c-typeck.cc
index ffcab7df4d3..8c03a7731c4 100644
--- a/gcc/c/c-typeck.cc
+++ b/gcc/c/c-typeck.cc
@@ -6695,6 +6695,9 @@ c_cast_expr (location_t loc, struct c_type_name
*type_name, tree expr)
return error_mark_node;
ret = build_c_cast (loc, type, expr);
+ if (ret == error_mark_node)
+ return error_mark_node;
+
if (type_expr)
{
bool inner_expr_const = true;
diff --git a/gcc/testsuite/gcc.dg/noncompile/sizeof-1.c
b/gcc/testsuite/gcc.dg/noncompile/sizeof-1.c
new file mode 100644
index 00000000000..db7e2044b11
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/noncompile/sizeof-1.c
@@ -0,0 +1,7 @@
+/* PR c/115642 */
+/* { dg-do compile } */
+
+void f (int N) {
+ int a[2][N];
+ sizeof ((int [2][N])a); /* { dg-error "cast specifies array type" } */
+}
base-commit: 47b68cda2c4afe32e84c5f18da0196c39e5e0edf
--
2.45.2
