[PATCH] PR gold/20245: Handle output without PLT

[H.J. Lu]

If there is no PLT in output, return 0 for first_plt_entry_offset and
plt_entry_size.

Tested on x86.  OK for trunk?

H.J.
---
	PR gold/20245
	* i386.cc (Target_i386::first_plt_entry_offset): Return 0 if
	plt_ is NULL.
	(Target_i386::plt_entry_size): Likewise.
	(Target_x86_64<size>::first_plt_entry_offset): Likewise.
	(Target_x86_64<size>::plt_entry_size): Likewise.
---
 gold/i386.cc   | 4 ++++
 gold/x86_64.cc | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/gold/i386.cc b/gold/i386.cc
index 8aaa2a8..87e6a6d 100644
--- a/gold/i386.cc
+++ b/gold/i386.cc
@@ -1565,6 +1565,8 @@ Target_i386::plt_entry_count() const
 unsigned int
 Target_i386::first_plt_entry_offset() const
 {
+  if (this->plt_ == NULL)
+    return 0;
   return this->plt_->first_plt_entry_offset();
 }
 
@@ -1573,6 +1575,8 @@ Target_i386::first_plt_entry_offset() const
 unsigned int
 Target_i386::plt_entry_size() const
 {
+  if (this->plt_ == NULL)
+    return 0;
   return this->plt_->get_plt_entry_size();
 }
 
diff --git a/gold/x86_64.cc b/gold/x86_64.cc
index 81126ef..d069957 100644
--- a/gold/x86_64.cc
+++ b/gold/x86_64.cc
@@ -1822,6 +1822,8 @@ template<int size>
 unsigned int
 Target_x86_64<size>::first_plt_entry_offset() const
 {
+  if (this->plt_ == NULL)
+    return 0;
   return this->plt_->first_plt_entry_offset();
 }
 
@@ -1831,6 +1833,8 @@ template<int size>
 unsigned int
 Target_x86_64<size>::plt_entry_size() const
 {
+  if (this->plt_ == NULL)
+    return 0;
   return this->plt_->get_plt_entry_size();
 }
 
-- 
2.5.5