Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 20 insertions, 0 deletions

diff --git a/tests/incremental/issue-39828/auxiliary/generic.rs b/tests/incremental/issue-39828/auxiliary/generic.rs
new file mode 100644
index 000000000..a5bb0d65f
--- /dev/null
+++ b/tests/incremental/issue-39828/auxiliary/generic.rs
@@ -0,0 +1,8 @@
+// revisions:rpass1 rpass2
+// compile-flags: -Z query-dep-graph
+
+#![rustc_partition_reused(module="generic-fallback.cgu", cfg="rpass2")]
+#![feature(rustc_attrs)]
+
+#![crate_type="rlib"]
+pub fn foo<T>() { }
diff --git a/tests/incremental/issue-39828/issue-39828.rs b/tests/incremental/issue-39828/issue-39828.rs
new file mode 100644
index 000000000..8cef916ff
--- /dev/null
+++ b/tests/incremental/issue-39828/issue-39828.rs
@@ -0,0 +1,12 @@
+// Regression test for #39828. If you make use of a module that
+// consists only of generics, no code is generated, just a dummy
+// module. The reduced graph consists of a single node (for that
+// module) with no inputs. Since we only serialize edges, when we
+// reload, we would consider that node dirty since it is not recreated
+// (it is not the target of any edges).
+
+// revisions:rpass1 rpass2
+// aux-build:generic.rs
+
+extern crate generic;
+fn main() { }