The patch contains 2 upstream changes needed for building with GCC 12.

From e06d2c95bf88f84f9e570eeece5c3408fd8f24fe Mon Sep 17 00:00:00 2001
From: serge-sans-paille <serge.guelton@telecom-bretagne.eu>
Date: Mon, 14 Mar 2022 16:10:12 +0100
Subject: [PATCH] Move mult operator for str to the appropriate ns

---
 pythran/pythonic/include/types/str.hpp | 11 +++--
 pythran/pythonic/types/str.hpp         | 64 +++++++++++++-------------
 2 files changed, 38 insertions(+), 37 deletions(-)

diff --git a/pythran/pythonic/include/types/str.hpp b/pythran/pythonic/include/types/str.hpp
index 329de1c1d..5aa526692 100644
--- a/pythran/pythonic/include/types/str.hpp
+++ b/pythran/pythonic/include/types/str.hpp
@@ -318,6 +318,12 @@ namespace types
 
   std::ostream &operator<<(std::ostream &os, chr const &s);
   std::ostream &operator<<(std::ostream &os, str const &s);
+
+  str operator*(str const &s, long n);
+  str operator*(long t, str const &s);
+  str operator*(chr const &s, long n);
+  str operator*(long t, chr const &s);
+
 }
 
 namespace operator_
@@ -356,11 +362,6 @@ struct assignable<char const[N]> {
 };
 PYTHONIC_NS_END
 
-pythonic::types::str operator*(pythonic::types::str const &s, long n);
-pythonic::types::str operator*(long t, pythonic::types::str const &s);
-pythonic::types::str operator*(pythonic::types::chr const &s, long n);
-pythonic::types::str operator*(long t, pythonic::types::chr const &s);
-
 namespace std
 {
   template <>
diff --git a/pythran/pythonic/types/str.hpp b/pythran/pythonic/types/str.hpp
index 6e9bc241f..ee540a73b 100644
--- a/pythran/pythonic/types/str.hpp
+++ b/pythran/pythonic/types/str.hpp
@@ -655,6 +655,38 @@ namespace types
   {
     return os << s.c_str();
   }
+
+  str operator*(str const &s, long n)
+  {
+    if (n <= 0)
+      return str();
+    str other;
+    other.resize(s.size() * n);
+    auto where = other.chars().begin();
+    for (long i = 0; i < n; i++, where += s.size())
+      std::copy(s.chars().begin(), s.chars().end(), where);
+    return other;
+  }
+
+  str operator*(long t, str const &s)
+  {
+    return s * t;
+  }
+
+  str operator*(chr const &s, long n)
+  {
+    if (n <= 0)
+      return str();
+    str other;
+    other.resize(n);
+    std::fill(other.chars().begin(), other.chars().end(), s.c);
+    return other;
+  }
+
+  str operator*(long t, chr const &c)
+  {
+    return c * t;
+  }
 }
 
 namespace operator_
@@ -686,38 +718,6 @@ namespace operator_
 }
 PYTHONIC_NS_END
 
-pythonic::types::str operator*(pythonic::types::str const &s, long n)
-{
-  if (n <= 0)
-    return pythonic::types::str();
-  pythonic::types::str other;
-  other.resize(s.size() * n);
-  auto where = other.chars().begin();
-  for (long i = 0; i < n; i++, where += s.size())
-    std::copy(s.chars().begin(), s.chars().end(), where);
-  return other;
-}
-
-pythonic::types::str operator*(long t, pythonic::types::str const &s)
-{
-  return s * t;
-}
-
-pythonic::types::str operator*(pythonic::types::chr const &s, long n)
-{
-  if (n <= 0)
-    return pythonic::types::str();
-  pythonic::types::str other;
-  other.resize(n);
-  std::fill(other.chars().begin(), other.chars().end(), s.c);
-  return other;
-}
-
-pythonic::types::str operator*(long t, pythonic::types::chr const &c)
-{
-  return c * t;
-}
-
 namespace std
 {
 
From 343cb724d857fe8adcef071ab088df2c02ba0d4c Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Mon, 14 Mar 2022 10:11:00 +0000
Subject: [PATCH] Add default constructor to string_iterator

A type must be default constructible to meet the forward iterator requirements.
GCC 12 won't compile `std::reverse_iterator<string_iterator>` without
this change.
---
 pythran/pythonic/include/types/str.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pythran/pythonic/include/types/str.hpp b/pythran/pythonic/include/types/str.hpp
index 329de1c1d..a0df45905 100644
--- a/pythran/pythonic/include/types/str.hpp
+++ b/pythran/pythonic/include/types/str.hpp
@@ -231,6 +231,7 @@ namespace types
   struct string_iterator : std::iterator<std::random_access_iterator_tag, str,
                                          std::ptrdiff_t, str *, str> {
     std::string::const_iterator curr;
+    string_iterator() = default;
     string_iterator(std::string::const_iterator iter) : curr(iter)
     {
     }