Fix a problem in tracing across fork on PPC64

[platform/upstream/ltrace.git] / sysdeps / linux-gnu / ppc / plt.c

diff --git a/sysdeps/linux-gnu/ppc/plt.c b/sysdeps/linux-gnu/ppc/plt.c
index 3ec1397..8715da6 100644 (file)
--- a/sysdeps/linux-gnu/ppc/plt.c
+++ b/sysdeps/linux-gnu/ppc/plt.c
@@ -1,6 +1,6 @@
 /*
  * This file is part of ltrace.
- * Copyright (C) 2012,2013 Petr Machata, Red Hat Inc.
+ * Copyright (C) 2012,2013,2014 Petr Machata, Red Hat Inc.
  * Copyright (C) 2004,2008,2009 Juan Cespedes
  * Copyright (C) 2006 Paul Gilliam
  *
@@ -1157,6 +1157,18 @@ int
 arch_process_clone(struct process *retp, struct process *proc)
 {
        retp->arch = proc->arch;
+
+       if (retp->arch.dl_plt_update_bp != NULL) {
+               /* Point it to the corresponding breakpoint in RETP.
+                * It must be there, this part of PROC has already
+                * been cloned to RETP.  */
+               retp->arch.dl_plt_update_bp
+                       = address2bpstruct(retp,
+                                          retp->arch.dl_plt_update_bp->addr);
+
+               assert(retp->arch.dl_plt_update_bp != NULL);
+       }
+
        return 0;
 }