Use memmove instead of memcpy for overlapping areas
Signed-off-by: Junio C Hamano <junkio@cox.net>
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6dcfa306f2
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@ -22,7 +22,7 @@ static SHA_CTX ctx;
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* Make sure at least "min" bytes are available in the buffer, and
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* return the pointer to the buffer.
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*/
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static void * fill(int min)
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static void *fill(int min)
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{
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if (min <= len)
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return buffer + offset;
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@ -30,7 +30,7 @@ static void * fill(int min)
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die("cannot fill %d bytes", min);
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if (offset) {
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SHA1_Update(&ctx, buffer, offset);
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memcpy(buffer, buffer + offset, len);
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memmove(buffer, buffer + offset, len);
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offset = 0;
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}
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do {
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@ -53,7 +53,7 @@ static int input_fd;
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* Make sure at least "min" bytes are available in the buffer, and
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* return the pointer to the buffer.
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*/
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static void * fill(int min)
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static void *fill(int min)
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{
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if (min <= input_len)
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return input_buffer + input_offset;
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@ -61,7 +61,7 @@ static void * fill(int min)
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die("cannot fill %d bytes", min);
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if (input_offset) {
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SHA1_Update(&input_ctx, input_buffer, input_offset);
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memcpy(input_buffer, input_buffer + input_offset, input_len);
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memmove(input_buffer, input_buffer + input_offset, input_len);
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input_offset = 0;
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}
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do {
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