try not to call memcpy with length 0 in hash calculations

[apt.git] / apt-pkg / contrib / sha2.h

diff --git a/apt-pkg/contrib/sha2.h b/apt-pkg/contrib/sha2.h
index 8b4bdd439b1c80aef55b7a2799aefdd748ce1713..164840d3b52ff5a0063c0c1900564629bd2b677b 100644 (file)
--- a/apt-pkg/contrib/sha2.h
+++ b/apt-pkg/contrib/sha2.h
@@ -34,7 +34,7 @@ class SHA2SummationBase : public SummationImplementation
  protected:
    bool Done;
  public:
-   bool Add(const unsigned char *inbuf, unsigned long long len) APT_OVERRIDE = 0;
+   bool Add(const unsigned char *inbuf, unsigned long long len) APT_OVERRIDE APT_NONNULL(2) = 0;
 
    void Result();
 };
@@ -45,7 +45,7 @@ class SHA256Summation : public SHA2SummationBase
    unsigned char Sum[32];
 
    public:
-   bool Add(const unsigned char *inbuf, unsigned long long len) APT_OVERRIDE
+   bool Add(const unsigned char *inbuf, unsigned long long len) APT_OVERRIDE APT_NONNULL(2)
    {
       if (Done) 
          return false;
@@ -78,7 +78,7 @@ class SHA512Summation : public SHA2SummationBase
    unsigned char Sum[64];
 
    public:
-   bool Add(const unsigned char *inbuf, unsigned long long len) APT_OVERRIDE
+   bool Add(const unsigned char *inbuf, unsigned long long len) APT_OVERRIDE APT_NONNULL(2)
    {
       if (Done) 
          return false;