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Latest Intel compiler means every word in "if copying [with memcpy] takes

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place between objects that overlap, the behavior is undefined." It's hard
to comprehend, but it reportedly manages to be case.
This commit is contained in:
Andy Polyakov 2005-07-08 16:46:22 +00:00
parent 7d368fcbd8
commit 8f3bdc72d0
1 changed files with 2 additions and 2 deletions
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4
crypto/des/cfb_enc.c
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@ -125,7 +125,7 @@ void DES_cfb_encrypt(const unsigned char *in, unsigned char *out, int numbits,
sh[0]=v0, sh[1]=v1, sh[2]=d0, sh[3]=d1; sh[0]=v0, sh[1]=v1, sh[2]=d0, sh[3]=d1;
#endif #endif
if (rem==0) if (rem==0)
memcpy(ovec,ovec+num,8); memmove(ovec,ovec+num,8);
else else
for(i=0 ; i < 8 ; ++i) for(i=0 ; i < 8 ; ++i)
ovec[i]=ovec[i+num]<<rem | ovec[i]=ovec[i+num]<<rem |
@ -168,7 +168,7 @@ void DES_cfb_encrypt(const unsigned char *in, unsigned char *out, int numbits,
sh[0]=v0, sh[1]=v1, sh[2]=d0, sh[3]=d1; sh[0]=v0, sh[1]=v1, sh[2]=d0, sh[3]=d1;
#endif #endif
if (rem==0) if (rem==0)
memcpy (ovec,ovec+num,8); memmove(ovec,ovec+num,8);
else else
for(i=0 ; i < 8 ; ++i) for(i=0 ; i < 8 ; ++i)
ovec[i]=ovec[i+num]<<rem | ovec[i]=ovec[i+num]<<rem |