4 files changed, 8 insertions, 8 deletions

diff --git a/bitbake/lib/bb/cache.py b/bitbake/lib/bb/cache.py
index 36270d0093..c85effd6f0 100644
--- a/bitbake/lib/bb/cache.py
+++ b/bitbake/lib/bb/cache.py
@@ -238,7 +238,7 @@ def virtualfn2realfn(virtualfn):
     Convert a virtual file name to a real one + the associated subclass keyword
     """
     mc = ""
-    if virtualfn.startswith('mc:'):
+    if virtualfn.startswith('mc:') and virtualfn.count(':') >= 2:
         elems = virtualfn.split(':')
         mc = elems[1]
         virtualfn = ":".join(elems[2:])
@@ -268,7 +268,7 @@ def variant2virtual(realfn, variant):
     """
     if variant == "":
         return realfn
-    if variant.startswith("mc:"):
+    if variant.startswith("mc:") and variant.count(':') >= 2:
         elems = variant.split(":")
         if elems[2]:
             return "mc:" + elems[1] + ":virtual:" + ":".join(elems[2:]) + ":" + realfn
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 83cfee7fb4..4446addc77 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -614,7 +614,7 @@ class BBCooker:
         # Replace string such as "mc:*:bash"
         # into "mc:A:bash mc:B:bash bash"
         for k in targetlist:
-            if k.startswith("mc:"):
+            if k.startswith("mc:") and k.count(':') >= 2:
                 if wildcard:
                     bb.fatal('multiconfig conflict')
                 if k.split(":")[1] == "*":
@@ -648,7 +648,7 @@ class BBCooker:
         for k in fulltargetlist:
             origk = k
             mc = ""
-            if k.startswith("mc:"):
+            if k.startswith("mc:") and k.count(':') >= 2:
                 mc = k.split(":")[1]
                 k = ":".join(k.split(":")[2:])
             ktask = task
diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 28bdadb45e..7d493eb402 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -38,7 +38,7 @@ def taskname_from_tid(tid):
     return tid.rsplit(":", 1)[1]
 
 def mc_from_tid(tid):
-    if tid.startswith('mc:'):
+    if tid.startswith('mc:') and tid.count(':') >= 2:
         return tid.split(':')[1]
     return ""
 
@@ -47,13 +47,13 @@ def split_tid(tid):
     return (mc, fn, taskname)
 
 def split_mc(n):
-    if n.startswith("mc:"):
+    if n.startswith("mc:") and n.count(':') >= 2:
         _, mc, n = n.split(":", 2)
         return (mc, n)
     return ('', n)
 
 def split_tid_mcfn(tid):
-    if tid.startswith('mc:'):
+    if tid.startswith('mc:') and tid.count(':') >= 2:
         elems = tid.split(':')
         mc = elems[1]
         fn = ":".join(elems[2:-1])
diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index 0ac3952466..e0e03318a6 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -748,7 +748,7 @@ def clean_basepath(basepath):
     if basepath[0] == '/':
         return cleaned
 
-    if basepath.startswith("mc:"):
+    if basepath.startswith("mc:") and basepath.count(':') >= 2:
         mc, mc_name, basepath = basepath.split(":", 2)
         mc_suffix = ':mc:' + mc_name
     else: