ci: stop earlier on vc/v.c files, that may break on systems != linux (#…

…21397)

.github/workflows/gen_vc_ci.yml

@@ -42,17 +42,21 @@ jobs:
           COMMIT_MSG=$(git log -1 --oneline --pretty='%s' HEAD)
 
           rm -rf vc
-          .github/workflows/retry.sh git clone --depth=1 \
+          ./v retry -- git clone --depth=1 \
             https://vlang-bot:${{ secrets.VLANG_BOT_SECRET }}@github.com/vlang/vc.git
 
           rm -rf vc/v.c vc/v_win.c
 
-          ./v -o vc/v.c -os cross cmd/v
+          ./v -o vc/v.c     -cross               cmd/v
           ./v -o vc/v_win.c -os windows -cc msvc cmd/v
 
           sed -i "1s/^/#define V_COMMIT_HASH \"$COMMIT_HASH\"\n/" vc/v.c
           sed -i "1s/^/#define V_COMMIT_HASH \"$COMMIT_HASH\"\n/" vc/v_win.c
 
+          # do some sanity checks for the generated v.c file:
+          grep 'Turned ON custom defines: no_backtrace,cross'  vc/v.c
+          grep '#define CUSTOM_DEFINE_cross' vc/v.c
+
           # ensure the C files are over 5000 lines long, as a safety measure
           [ $(wc -l < vc/v.c) -gt 5000 ]
           [ $(wc -l < vc/v_win.c) -gt 5000 ]
@@ -61,7 +65,7 @@ jobs:
           git -C vc commit -m "[v:master] $COMMIT_HASH - $COMMIT_MSG"
 
           # in case there are recent commits:
-          .github/workflows/retry.sh git -C vc pull --rebase origin master
+          ./v retry -- git -C vc pull --rebase origin master
           git -C vc log -3
 
       - name: Deploy