Tests for unknown commit

Adds test for fix to cc_binary in a previous CL which required a Bazel change.

RELNOTES:none
PiperOrigin-RevId: 361152661
Change-Id: Ic7b9cda6636eff6bc231f00f8cdd542e0c88113c

examples/experimental_cc_shared_library.bzl

@@ -109,7 +109,7 @@ def _build_exports_map_from_only_dynamic_deps(merged_shared_library_infos):
             if export in exports_map:
                 fail("Two shared libraries in dependencies export the same symbols. Both " +
                      exports_map[export].libraries[0].dynamic_library.short_path +
-                     " and " + linker_input.dynamic_library.short_path +
+                     " and " + linker_input.libraries[0].dynamic_library.short_path +
                      " export " + export)
             exports_map[export] = linker_input
     return exports_map

examples/test_cc_shared_library/BUILD

@@ -21,6 +21,16 @@ cc_binary(
     deps = ["foo"],
 )
 
+cc_binary(
+    name = "binary_with_bar_so_twice",
+    srcs = ["main.cc"],
+    dynamic_deps = [
+        "foo_so",
+        "bar_so",
+    ],
+    deps = ["foo"],
+)
+
 cc_shared_library(
     name = "foo_so",
     additional_linker_inputs = [
@@ -212,3 +222,15 @@ cc_shared_library_permissions(
     ],
     visibility = ["//examples/test_cc_shared_library/diamond_inheritance:__pkg__"],
 )
+
+build_failure_test(
+    name = "two_dynamic_deps_same_export_in_so_test",
+    message = "Two shared libraries in dependencies export the same symbols",
+    target_under_test = "//examples/test_cc_shared_library/failing_targets:two_dynamic_deps_same_export_in_so",
+)
+
+build_failure_test(
+    name = "two_dynamic_deps_same_export_in_binary_test",
+    message = "Two shared libraries in dependencies export the same symbols",
+    target_under_test = "//examples/test_cc_shared_library/failing_targets:two_dynamic_deps_same_export_in_binary",
+)

examples/test_cc_shared_library/failing_targets/BUILD

@@ -1,4 +1,4 @@
-load("//cc:defs.bzl", "cc_binary")
+load("//cc:defs.bzl", "cc_binary", "cc_library")
 load("//examples:experimental_cc_shared_library.bzl", "cc_shared_library", "cc_shared_library_permissions")
 
 package(
@@ -35,3 +35,56 @@ cc_shared_library_permissions(
         "//examples/test_cc_shared_library:foo",
     ],
 )
+
+cc_library(
+    name = "a",
+    srcs = ["a.cc"],
+)
+
+cc_library(
+    name = "b",
+    srcs = ["b.cc"],
+)
+
+cc_library(
+    name = "c",
+    srcs = ["c.cc"],
+)
+
+cc_shared_library(
+    name = "two_dynamic_deps_same_export_in_so",
+    dynamic_deps = [
+        ":b_so",
+        ":b2_so",
+    ],
+    roots = [
+        ":a",
+    ],
+    tags = TAGS,
+)
+
+cc_binary(
+    name = "two_dynamic_deps_same_export_in_binary",
+    srcs = ["main.cc"],
+    dynamic_deps = [
+        ":b_so",
+        ":b2_so",
+    ],
+    tags = TAGS,
+)
+
+cc_shared_library(
+    name = "b_so",
+    roots = [
+        ":b",
+    ],
+    tags = TAGS,
+)
+
+cc_shared_library(
+    name = "b2_so",
+    roots = [
+        ":b",
+    ],
+    tags = TAGS,
+)