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Avoid undefined behaviors of memcpy() in gz*printf().

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This commit is contained in:
Mark Adler 2017-10-12 19:34:51 -07:00
parent ae49d1472e
commit b25d5fcdcf
1 changed files with 2 additions and 2 deletions
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4
gzwrite.c
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@ -444,7 +444,7 @@ int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
strm->avail_in = state->size;
if (gz_comp(state, Z_NO_FLUSH) == -1)
return state->err;
memcpy(state->in, state->in + state->size, left);
memmove(state->in, state->in + state->size, left);
strm->next_in = state->in;
strm->avail_in = left;
}
@ -543,7 +543,7 @@ int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
strm->avail_in = state->size;
if (gz_comp(state, Z_NO_FLUSH) == -1)
return state->err;
memcpy(state->in, state->in + state->size, left);
memmove(state->in, state->in + state->size, left);
strm->next_in = state->in;
strm->avail_in = left;
}