The following patch seems to solve this problem.
Index: file.cpp
===================================================================
--- file.cpp (revision 216)
+++ file.cpp (working copy)
@@ -1110,6 +1110,14 @@
if( ptlib_success( pid, sc_num ) ) {
ptlib_stat stat;
+ // We are tight on context memory - first set up the args for the continuation syscall,
+ // only then handle the current call return
+ ptlib_save_state( pid, state->saved_state );
+ ptlib_set_argument( pid, 1, state->context_state[2] );
+ ptlib_set_argument( pid, 2, state->context_state[3] );
+ ptlib_set_argument( pid, 3, state->context_state[0]==10 ? AT_REMOVEDIR : 0 );
+
+ // Will the file be actually deleted?
ptlib_get_mem( pid, state->memory, &stat, sizeof(stat) );
if( stat.nlink==1 || state->context_state[0]==10 ) {
@@ -1123,11 +1131,7 @@
state->context_state[2]=0;
}
- // Perform the actual unlink operation
- ptlib_save_state( pid, state->saved_state );
- ptlib_set_argument( pid, 1, state->context_state[2] );
- ptlib_set_argument( pid, 2, state->context_state[3] );
- ptlib_set_argument( pid, 3, state->context_state[0]==10 ? AT_REMOVEDIR : 0 );
+ // Complete the continuation call
ptlib_generate_syscall( pid, state->orig_sc, state->shared_memory );
state->state=pid_state::REDIRECT1;
state->context_state[0]=1;
