bitbake: providers: use local variable for packages_dynamic pattern

During parsing, Python raises

   RuntimeError: dictionary changed size during iteration

in getRuntimeProviders, if you happen to have a recipe
with an explicit RDEPENDS on a dynamic package containing a '+'
character, such as 'gtk+3-locale-en'.

This is because we're using the modified pattern as the
key into the packages_dynamic dict to append to rproviders,
and since that key doesn't exist, the dict is getting modified
to add a new, empty, entry for it. So even without the runtime
error, we'd be generating an incorrect result.

Fix this by using a local variable for modifying the pattern
and using the original key to retrieve the value on a match.

(Bitbake rev: 07de375c3e57f17ab7b47569186f24ecd9896825)

Signed-off-by: Matt Madison <matt@madison.systems>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/bitbake/lib/bb/providers.py b/bitbake/lib/bb/providers.py
index 8c1c31a5c5..e11a4637d1 100644
--- a/bitbake/lib/bb/providers.py
+++ b/bitbake/lib/bb/providers.py
@@ -396,8 +396,8 @@ def getRuntimeProviders(dataCache, rdepend):
         return rproviders
 
     # Only search dynamic packages if we can't find anything in other variables
-    for pattern in dataCache.packages_dynamic:
-        pattern = pattern.replace(r'+', r"\+")
+    for pat_key in dataCache.packages_dynamic:
+        pattern = pat_key.replace(r'+', r"\+")
         if pattern in regexp_cache:
             regexp = regexp_cache[pattern]
         else:
@@ -408,7 +408,7 @@ def getRuntimeProviders(dataCache, rdepend):
                 raise
             regexp_cache[pattern] = regexp
         if regexp.match(rdepend):
-            rproviders += dataCache.packages_dynamic[pattern]
+            rproviders += dataCache.packages_dynamic[pat_key]
             logger.debug("Assuming %s is a dynamic package, but it may not exist" % rdepend)
 
     return rproviders