diff options
| -rw-r--r-- | src/nvim/undo.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/nvim/undo.c b/src/nvim/undo.c index b72d8ddb4f..2ab31b6cfd 100644 --- a/src/nvim/undo.c +++ b/src/nvim/undo.c @@ -80,6 +80,7 @@ #define UH_MAGIC 0x18dade /* value for uh_magic when in use */ #define UE_MAGIC 0xabc123 /* value for ue_magic when in use */ +#include <assert.h> #include <inttypes.h> #include <errno.h> #include <stdbool.h> @@ -2682,8 +2683,11 @@ void u_undoline(void) */ void u_blockfree(buf_T *buf) { - while (buf->b_u_oldhead != NULL) + while (buf->b_u_oldhead != NULL) { + u_header_T *previous_oldhead = buf->b_u_oldhead; u_freeheader(buf, buf->b_u_oldhead, NULL); + assert(buf->b_u_oldhead != previous_oldhead); + } free(buf->b_u_line_ptr); } |