Merge branch '10.1' into 10.2

6 files changed, 14 insertions, 7 deletions

diff --git a/mysys/lf_alloc-pin.c b/mysys/lf_alloc-pin.c
index f8a15829fb1..b349ef88ed1 100644
--- a/mysys/lf_alloc-pin.c
+++ b/mysys/lf_alloc-pin.c
@@ -103,6 +103,12 @@
 #include <my_sys.h>
 #include <lf.h>
 
+/*
+  when using alloca() leave at least that many bytes of the stack -
+  for functions we might be calling from within this stack frame
+*/
+#define ALLOCA_SAFETY_MARGIN 8192
+
 #define LF_PINBOX_MAX_PINS 65536
 
 static void lf_pinbox_real_free(LF_PINS *pins);
@@ -345,7 +351,8 @@ static void lf_pinbox_real_free(LF_PINS *pins)
   {
     int alloca_size= sizeof(void *)*LF_PINBOX_PINS*npins;
     /* create a sorted list of pinned addresses, to speed up searches */
-    if (available_stack_size(&pinbox, *pins->stack_ends_here) > alloca_size)
+    if (available_stack_size(&pinbox, *pins->stack_ends_here) >
+        alloca_size + ALLOCA_SAFETY_MARGIN)
     {
       struct st_harvester hv;
       addr= (void **) alloca(alloca_size);
diff --git a/mysys/mf_iocache2.c b/mysys/mf_iocache2.c
index 93caa7bc74a..2499094037d 100644
--- a/mysys/mf_iocache2.c
+++ b/mysys/mf_iocache2.c
@@ -44,7 +44,7 @@
 
   RETURN VALUE
     0  All OK
-    1  An error occured
+    1  An error occurred
 */
 int
 my_b_copy_to_file(IO_CACHE *cache, FILE *file)
diff --git a/mysys/mf_keycache.c b/mysys/mf_keycache.c
index 188a8d0429e..3077415b243 100644
--- a/mysys/mf_keycache.c
+++ b/mysys/mf_keycache.c
@@ -274,7 +274,7 @@ struct st_hash_link
 };
 
 /* simple states of a block */
-#define BLOCK_ERROR           1 /* an error occured when performing file i/o */
+#define BLOCK_ERROR           1 /* an error occurred when performing file i/o */
 #define BLOCK_READ            2 /* file block is in the block buffer         */
 #define BLOCK_IN_SWITCH       4 /* block is preparing to read new page       */
 #define BLOCK_REASSIGNED      8 /* blk does not accept requests for old page */
diff --git a/mysys/my_default.c b/mysys/my_default.c
index 34ba9eef218..7f41551f779 100644
--- a/mysys/my_default.c
+++ b/mysys/my_default.c
@@ -363,7 +363,7 @@ err:
 
   RETURN
     0 - ok
-    1 - error occured
+    1 - error occurred
 */
 
 static int handle_default_option(void *in_ctx, const char *group_name,
diff --git a/mysys/my_delete.c b/mysys/my_delete.c
index e99c7ff5fcb..3dfe290dabe 100644
--- a/mysys/my_delete.c
+++ b/mysys/my_delete.c
@@ -110,7 +110,7 @@ static int my_win_unlink(const char *name)
   if (handle != INVALID_HANDLE_VALUE)
   {
     /*
-      We opened file without sharing flags (exclusive), noone else has this file
+      We opened file without sharing flags (exclusive), no one else has this file
       opened, thus it is save to close handle to remove it. No renaming is 
       necessary.
     */
diff --git a/mysys/my_lock.c b/mysys/my_lock.c
index 0abbc6c3084..082d8e9f5a0 100644
--- a/mysys/my_lock.c
+++ b/mysys/my_lock.c
@@ -131,7 +131,7 @@ error:
 
   RETURN VALUE
     0   Success
-    -1  An error has occured and 'my_errno' is set
+    -1  An error has occurred and 'my_errno' is set
         to indicate the actual error code.
 */
 
@@ -203,7 +203,7 @@ int my_lock(File fd, int locktype, my_off_t start, my_off_t length,
         == MY_FILEPOS_ERROR)
     {
       /*
-        If an error has occured in my_seek then we will already
+        If an error has occurred in my_seek then we will already
         have an error code in my_errno; Just return error code.
       */
       DBUG_RETURN(-1);