From: Philip Herron <herron.phi...@googlemail.com>
num regions is based on the used arguments of regions which can be
less than the substutions requirements. So lets check for that and allow
anon regions to be created for them.
Fixes Rust-GCC#3605
gcc/rust/ChangeLog:
* typecheck/rust-tyty-subst.h: check for min range
gcc/testsuite/ChangeLog:
* rust/compile/issue-3605.rs: New test.
Signed-off-by: Philip Herron <herron.phi...@googlemail.com>
---
gcc/rust/typecheck/rust-tyty-subst.h | 2 +-
gcc/testsuite/rust/compile/issue-3605.rs | 5 +++++
2 files changed, 6 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/rust/compile/issue-3605.rs
diff --git a/gcc/rust/typecheck/rust-tyty-subst.h
b/gcc/rust/typecheck/rust-tyty-subst.h
index b8e928d60f0..3f0b912fa7b 100644
--- a/gcc/rust/typecheck/rust-tyty-subst.h
+++ b/gcc/rust/typecheck/rust-tyty-subst.h
@@ -125,7 +125,7 @@ public:
std::vector<Region> subst)
{
RegionParamList list (num_regions);
- for (size_t i = 0; i < subst.size (); i++)
+ for (size_t i = 0; i < MIN (num_regions, subst.size ()); i++)
list.regions.at (i) = subst.at (i);
for (size_t i = subst.size (); i < num_regions; i++)
{
diff --git a/gcc/testsuite/rust/compile/issue-3605.rs
b/gcc/testsuite/rust/compile/issue-3605.rs
new file mode 100644
index 00000000000..05e6e48e66e
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3605.rs
@@ -0,0 +1,5 @@
+enum Foo<'a> {}
+
+enum Bar<'a> {
+ in_band_def_explicit_impl(Foo<'a>),
+}
--
2.49.0
