main/gdb: fix compatibility with python 3.8

1 files changed, 33 insertions, 0 deletions

diff --git a/main/gdb/python-3.8.patch b/main/gdb/python-3.8.patch
new file mode 100644
index 0000000000..db26f5ef40
--- /dev/null
+++ b/main/gdb/python-3.8.patch
@@ -0,0 +1,33 @@
+From b6484282f85bf7f11451b2441599c241d302ad9d Mon Sep 17 00:00:00 2001
+From: Raul Tambre <raul@tambre.ee>
+Date: Sat, 4 May 2019 15:48:17 -0400
+Subject: [PATCH] Fix incorrect use of 'is' operator for comparison in
+ python/lib/gdb/command/prompt.py
+
+The 'is' operator is not meant to be used for comparisons. It currently working
+is an implementation detail of CPython.  CPython 3.8 has added a SyntaxWarning
+for this.
+
+diff --git a/gdb/python/lib/gdb/command/prompt.py b/gdb/python/lib/gdb/command/prompt.py
+index 3d662a7..04b9e49 100644
+--- a/gdb/python/lib/gdb/command/prompt.py
++++ b/gdb/python/lib/gdb/command/prompt.py
+@@ -45,7 +45,7 @@ The currently defined substitutions are:
+         self.hook_set = False
+ 
+     def get_show_string (self, pvalue):
+-        if self.value is not '':
++        if self.value:
+            return "The extended prompt is: " + self.value
+         else:
+            return "The extended prompt is not set."
+@@ -57,7 +57,7 @@ The currently defined substitutions are:
+         return ""
+ 
+     def before_prompt_hook(self, current):
+-        if self.value is not '':
++        if self.value:
+             return gdb.prompt.substitute_prompt(self.value)
+         else:
+             return None
+