Properly escape /C and fix naming

library/compiler-builtins/.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
         - target: aarch64-pc-windows-msvc
           os: windows-latest
           rust: nightly
-          test_unc: 1
+          test_verbatim: 1
           no_std: 1
         - target: arm-unknown-linux-gnueabi
           os: ubuntu-latest
@@ -83,19 +83,19 @@ jobs:
         - target: i686-pc-windows-msvc
           os: windows-latest
           rust: nightly
-          test_unc: 1
+          test_verbatim: 1
         - target: x86_64-pc-windows-msvc
           os: windows-latest
           rust: nightly
-          test_unc: 1
+          test_verbatim: 1
         - target: i686-pc-windows-gnu
           os: windows-latest
           rust: nightly-i686-gnu
-          test_unc: 1
+          test_verbatim: 1
         - target: x86_64-pc-windows-gnu
           os: windows-latest
           rust: nightly-x86_64-gnu
-          test_unc: 1
+          test_verbatim: 1
     steps:
     - name: Print runner information
       run: uname -a
@@ -120,7 +120,7 @@ jobs:
       shell: bash
       env:
         NO_STD: ${{ matrix.no_std }}
-        TEST_UNC: ${{ matrix.test_unc }}
+        TEST_VERBATIM: ${{ matrix.test_verbatim }}
 
     # Otherwise we use our docker containers to run builds
     - run: cargo generate-lockfile && ./ci/run-docker.sh ${{ matrix.target }}

library/compiler-builtins/ci/run.sh

@@ -32,9 +32,9 @@ else
     $run --features no-f16-f128 --release
 fi
 
-if [ "${TEST_UNC:-}" = "1" ]; then
-    path=$(cmd.exe "/C echo \\\\?\\%cd%\\testcrate\\target_unc")
-    run="cargo test --manifest-path testcrate/Cargo.toml --target $target --target-dir $path"
+if [ "${TEST_VERBATIM:-}" = "1" ]; then
+    verb_path=$(cmd.exe //C echo \\\\?\\%cd%\\testcrate\\target2)
+    run="cargo test --manifest-path testcrate/Cargo.toml --target $target --target-dir $verb_path"
     $run
     $run --release
     $run --features c