Add 'explicit' to most single argument constructors

This prevents implicit conversions that we do not want, such
as having a FileFd* being converted to a debListParser.

Two cases are not yet handled because they require changes
in code using them:

1. The classes in hashes.h
2. The URI class - this one is used quite a lot

1 files changed, 2 insertions, 2 deletions

diff --git a/apt-inst/filelist.h b/apt-inst/filelist.h
index 7fe43de63..c5f103d87 100644
--- a/apt-inst/filelist.h
+++ b/apt-inst/filelist.h
@@ -97,7 +97,7 @@ class pkgFLCache
    bool AddConfFile(const char *Name,const char *NameEnd,
 		    PkgIterator const &Owner,const unsigned char *Sum);
 
-   pkgFLCache(DynamicMMap &Map);
+   explicit pkgFLCache(DynamicMMap &Map);
 //   ~pkgFLCache();
 };
 
@@ -288,7 +288,7 @@ class pkgFLCache::NodeIterator
    Package *RealPackage() const;
 
    NodeIterator() : Nde(0), Type(NdeHash), Owner(0) {};
-   NodeIterator(pkgFLCache &Owner) : Nde(Owner.NodeP), Type(NdeHash), Owner(&Owner) {}
+   explicit NodeIterator(pkgFLCache &Owner) : Nde(Owner.NodeP), Type(NdeHash), Owner(&Owner) {}
    NodeIterator(pkgFLCache &Owner,Node *Trg) : Nde(Trg), Type(NdeHash), Owner(&Owner) {}
    NodeIterator(pkgFLCache &Owner,Node *Trg,Package *) : Nde(Trg), Type(NdePkg), Owner(&Owner) {}
 };