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authorJulian Andres Klode <julian.klode@canonical.com>2020-01-16 10:53:05 +0100
committerJulian Andres Klode <julian.klode@canonical.com>2020-01-16 11:10:47 +0100
commitea4b7921b7e3eadb42be1deab5f343dbba8f29df (patch)
tree16970ac330e2e61eed0fe170f3fd83499501cd79 /apt-pkg/pkgcachegen.cc
parentcd8a51c7d4dd81830356b13ede50e2e5836de5be (diff)
NewProvidesAllArch: Check if group is empty before using it
APT 1.9.6 introduced empty groups by making use of groups to deduplicate package names. This is not normally a problem, but here we assumed that every group has at least one package. This caused a problem because automake was providing automake-1.16 while having the source package automake-1.16. So we found the automake-1.16 group, iterated over its empty package list, trying to store the provides (which hence never happened). LP: #1859952
Diffstat (limited to 'apt-pkg/pkgcachegen.cc')
-rw-r--r--apt-pkg/pkgcachegen.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index 75bd4c853..8e0301151 100644
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -1203,7 +1203,7 @@ bool pkgCacheListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, StringVi
Dynamic<StringView> DynPackage(Package);
Dynamic<StringView> DynVersion(Version);
- if (Grp.end() == true)
+ if (Grp.end() == true || Grp->FirstPackage == 0)
return NewProvides(Ver, Package, Cache.NativeArch(), Version, Flags);
else
{