Correct usage of sizeof() for pointer types

Given some pointer *x, calling sizeof(x) will give us
the size of the pointer (4/8 bytes) not the size fo the
underlying dereferenced structure. Use coccinelle to
search for these occurrences in the source code, and
correct them one by one. In the case of
erl_node_tables.c, the erts_snprintf() calls used a
much too small buffer.

- run_erl.c: Use the size of the signal type, not
  its pointer.
- erl_node_tables.c: Use the size of the _BUFFER in
  erts_snprintf() to make sure we can use the full space.

2 files changed, 3 insertions, 3 deletions

diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index c6d136f951..bc775cd663 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -705,7 +705,7 @@ erts_set_this_node(Eterm sysname, Uint creation)
     erts_this_node->sysname = sysname;
     erts_this_node->creation = creation;
     erts_this_node_sysname = erts_this_node_sysname_BUFFER;
-    erts_snprintf(erts_this_node_sysname, sizeof(erts_this_node_sysname),
+    erts_snprintf(erts_this_node_sysname, sizeof(erts_this_node_sysname_BUFFER),
                   "%T", sysname);
     (void) hash_put(&erts_node_table, (void *) erts_this_node);
 
@@ -794,7 +794,7 @@ void erts_init_node_tables(void)
     erts_this_node->creation			= 0;
     erts_this_node->dist_entry			= erts_this_dist_entry;
     erts_this_node_sysname = erts_this_node_sysname_BUFFER;
-    erts_snprintf(erts_this_node_sysname, sizeof(erts_this_node_sysname),
+    erts_snprintf(erts_this_node_sysname, sizeof(erts_this_node_sysname_BUFFER),
                   "%T", erts_this_node->sysname);
 
     (void) hash_put(&erts_node_table, (void *) erts_this_node);
diff --git a/erts/etc/ose/run_erl.c b/erts/etc/ose/run_erl.c
index 8bc49a485e..a6499f2bf3 100644
--- a/erts/etc/ose/run_erl.c
+++ b/erts/etc/ose/run_erl.c
@@ -615,7 +615,7 @@ int run_erl(int argc,char **argv) {
        returns */
     PROCESS main_pid;
     hunt_in_block("run_erl","main",&main_pid);
-    sig = alloc(sizeof(sig),ERTS_SIGNAL_RUN_ERL_DAEMON);
+    sig = alloc(sizeof(*sig),ERTS_SIGNAL_RUN_ERL_DAEMON);
     send(&sig,main_pid);
     sig = receive(sigsel);
     pid = sender(&sig);