Resolve inference variables before trying to remove overloaded indexing

Fixes #79152

This code was already set up to handle indexing an array. However, it
appears that we never end up with an inference variable for the slice
case, so the missing call to `resolve_vars_if_possible` had no effect
until now.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/test/ui/consts/issue-79152-const-array-index.rs b/src/test/ui/consts/issue-79152-const-array-index.rs
new file mode 100644
index 00000000000..95518e1bbdb
--- /dev/null
+++ b/src/test/ui/consts/issue-79152-const-array-index.rs
@@ -0,0 +1,11 @@
+// check-pass
+// Regression test for issue #79152
+//
+// Tests that we can index an array in a const function
+
+const fn foo() {
+    let mut array = [[0; 1]; 1];
+    array[0][0] = 1;
+}
+
+fn main() {}