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Commit b25d5fc

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madlermadler
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Avoid undefined behaviors of memcpy() in gz*printf().
1 parent ae49d14 commit b25d5fc

1 file changed

Lines changed: 2 additions & 2 deletions

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‎gzwrite.c‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -444,7 +444,7 @@ int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
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strm->avail_in = state->size;
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if (gz_comp(state, Z_NO_FLUSH) == -1)
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return state->err;
447-
memcpy(state->in, state->in + state->size, left);
447+
memmove(state->in, state->in + state->size, left);
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strm->next_in = state->in;
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strm->avail_in = left;
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}
@@ -543,7 +543,7 @@ int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
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strm->avail_in = state->size;
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if (gz_comp(state, Z_NO_FLUSH) == -1)
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return state->err;
546-
memcpy(state->in, state->in + state->size, left);
546+
memmove(state->in, state->in + state->size, left);
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strm->next_in = state->in;
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strm->avail_in = left;
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}

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