Fix pretty-printers not working when constexpr variables are optimized away

Author: k3DW

extra/boost_unordered_printers.py

@@ -1,4 +1,4 @@
-# Copyright 2024 Braden Ganetsky
+# Copyright 2024-2025 Braden Ganetsky
 # Distributed under the Boost Software License, Version 1.0.
 # https://www.boost.org/LICENSE_1_0.txt
 
@@ -191,8 +191,8 @@ def is_sentinel(self, group, pos):
         m = group["m"]
         at = lambda b: BoostUnorderedHelpers.maybe_unwrap_atomic(m[b]["n"])
 
-        N = group["N"]
-        sentinel_ = group["sentinel_"]
+        N = 15 # `group["N"]` may be optimized out
+        sentinel_ = 1 # `group["sentinel_"]` may be optimized out
         if self.is_regular_layout(group):
             return pos == N-1 and at(N-1) == sentinel_
         else:
@@ -234,7 +234,7 @@ def generator():
                 mask = (self.match_occupied(pc_.cast(groups.type).dereference()) >> (n0+1)) << (n0+1)
                 while mask == 0:
                     pc_ = self.cpo.next(pc_, groups.dereference().type.sizeof)
-                    p_ = self.cpo.next(p_, groups.dereference()["N"])
+                    p_ = self.cpo.next(p_, 15) # Use 15 because `groups.dereference()["N"]` may be optimized out
                     mask = self.match_occupied(pc_.cast(groups.type).dereference())
 
                 n = BoostUnorderedHelpers.countr_zero(mask)

include/boost/unordered/unordered_printers.hpp

@@ -1,8 +1,8 @@
-// Copyright 2024 Braden Ganetsky
+// Copyright 2024-2025 Braden Ganetsky
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
-// Generated on 2024-08-25T17:48:54
+// Generated on 2025-08-08T03:34:52
 
 #ifndef BOOST_UNORDERED_UNORDERED_PRINTERS_HPP
 #define BOOST_UNORDERED_UNORDERED_PRINTERS_HPP
@@ -204,8 +204,8 @@ __asm__(".pushsection \".debug_gdb_scripts\", \"MS\",%progbits,1\n"
         ".ascii \"        m = group[\\\"m\\\"]\\n\"\n"
         ".ascii \"        at = lambda b: BoostUnorderedHelpers.maybe_unwrap_atomic(m[b][\\\"n\\\"])\\n\"\n"
 
-        ".ascii \"        N = group[\\\"N\\\"]\\n\"\n"
-        ".ascii \"        sentinel_ = group[\\\"sentinel_\\\"]\\n\"\n"
+        ".ascii \"        N = 15 # `group[\\\"N\\\"]` may be optimized out\\n\"\n"
+        ".ascii \"        sentinel_ = 1 # `group[\\\"sentinel_\\\"]` may be optimized out\\n\"\n"
         ".ascii \"        if self.is_regular_layout(group):\\n\"\n"
         ".ascii \"            return pos == N-1 and at(N-1) == sentinel_\\n\"\n"
         ".ascii \"        else:\\n\"\n"
@@ -247,7 +247,7 @@ __asm__(".pushsection \".debug_gdb_scripts\", \"MS\",%progbits,1\n"
         ".ascii \"                mask = (self.match_occupied(pc_.cast(groups.type).dereference()) >> (n0+1)) << (n0+1)\\n\"\n"
         ".ascii \"                while mask == 0:\\n\"\n"
         ".ascii \"                    pc_ = self.cpo.next(pc_, groups.dereference().type.sizeof)\\n\"\n"
-        ".ascii \"                    p_ = self.cpo.next(p_, groups.dereference()[\\\"N\\\"])\\n\"\n"
+        ".ascii \"                    p_ = self.cpo.next(p_, 15) # Use 15 because `groups.dereference()[\\\"N\\\"]` may be optimized out\\n\"\n"
         ".ascii \"                    mask = self.match_occupied(pc_.cast(groups.type).dereference())\\n\"\n"
 
         ".ascii \"                n = BoostUnorderedHelpers.countr_zero(mask)\\n\"\n"