commit b3fcf7b7246975eebd030a264bb3021ca983c8f0
author David Tolnay <dtolnay@gmail.com> Thu Apr 30 22:58:28 2020 -0700
committer David Tolnay <dtolnay@gmail.com> Thu Apr 30 22:58:31 2020 -0700
tree 00d3649321c613fec8a75a4db830ab93e6400d01
parent 6b6423edfb3a9e09bfdcc370c7760ead17bdf9c9

Fix warning about get_unchecked returning a C-incompatible reference

    out/tests/ffi/lib.rs.cc:1011:22: warning: 'cxxbridge03$std$vector$tests$Shared$get_unchecked' has C-linkage specified, but returns user-defined type 'const tests::Shared &' which is incompatible with C [-Wreturn-type-c-linkage]
    const tests::Shared &cxxbridge03$std$vector$tests$Shared$get_unchecked(const ::std::vector<tests::Shared> &s, size_t pos) noexcept {
                         ^
    out/tests/ffi/lib.rs.cc:1038:17: warning: 'cxxbridge03$std$vector$tests$C$get_unchecked' has C-linkage specified, but returns user-defined type 'const tests::C &' which is incompatible with C [-Wreturn-type-c-linkage]
    const tests::C &cxxbridge03$std$vector$tests$C$get_unchecked(const ::std::vector<tests::C> &s, size_t pos) noexcept {
                    ^
    2 warnings generated.

gen/src/write.rs

diff --git a/gen/src/write.rs b/gen/src/write.rs
index 8b554d8..e227ce1 100644
--- a/gen/src/write.rs
+++ b/gen/src/write.rs
@@ -1232,10 +1232,10 @@
     writeln!(out, "}}");
     writeln!(
         out,
-        "const {} &cxxbridge03$std$vector${}$get_unchecked(const ::std::vector<{}> &s, size_t pos) noexcept {{",
+        "const {} *cxxbridge03$std$vector${}$get_unchecked(const ::std::vector<{}> &s, size_t pos) noexcept {{",
         inner, instance, inner,
     );
-    writeln!(out, "  return s[pos];");
+    writeln!(out, "  return &s[pos];");
     writeln!(out, "}}");
 
     write_unique_ptr_common(out, vector_ty, types);