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https://github.com/clearml/dropbear
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Avoid passing NULL to memcpy
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parent
9f642e2bd4
commit
d5cc5eb25c
16
buffer.c
16
buffer.c
@ -39,44 +39,30 @@
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/* Create (malloc) a new buffer of size */
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buffer* buf_new(unsigned int size) {
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buffer* buf;
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if (size > BUF_MAX_SIZE) {
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dropbear_exit("buf->size too big");
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}
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buf = (buffer*)m_malloc(sizeof(buffer)+size);
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if (size > 0) {
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buf->data = (unsigned char*)buf + sizeof(buffer);
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} else {
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buf->data = NULL;
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}
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buf->data = (unsigned char*)buf + sizeof(buffer);
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buf->size = size;
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return buf;
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}
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/* free the buffer's data and the buffer itself */
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void buf_free(buffer* buf) {
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m_free(buf);
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}
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/* overwrite the contents of the buffer to clear it */
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void buf_burn(const buffer* buf) {
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m_burn(buf->data, buf->size);
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}
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/* resize a buffer, pos and len will be repositioned if required when
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* downsizing */
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buffer* buf_resize(buffer *buf, unsigned int newsize) {
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if (newsize > BUF_MAX_SIZE) {
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dropbear_exit("buf->size too big");
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}
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