Merge remote-tracking branch 'cpython/main' into test/executor-map-ref-cycles

Author: ebonnal

.github/CODEOWNERS

@@ -107,13 +107,16 @@ Objects/exceptions.c          @iritkatriel
 # Hashing & cryptographic primitives
 **/*hashlib*                  @gpshead @tiran @picnixz
 **/*hashopenssl*              @gpshead @tiran @picnixz
-**/*pyhash*                   @gpshead @tiran
-**/sha*                       @gpshead @tiran @picnixz
-Modules/md5*                  @gpshead @tiran @picnixz
-**/*blake*                    @gpshead @tiran @picnixz
-Modules/_hacl/**              @gpshead
+**/*pyhash*                   @gpshead @tiran @picnixz
+Modules/*blake*               @gpshead @tiran @picnixz
+Modules/*md5*                 @gpshead @tiran @picnixz
+Modules/*sha*                 @gpshead @tiran @picnixz
+Modules/_hacl/**              @gpshead @picnixz
 **/*hmac*                     @gpshead @picnixz
 
+# libssl
+**/*ssl*                      @gpshead @picnixz
+
 # logging
 **/*logging*                  @vsajip
 

.github/workflows/tail-call.yml

@@ -112,8 +112,8 @@ jobs:
           find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
-          export PATH="/opt/homebrew/opt/llvm/bin:$PATH"
-          export PATH="/usr/local/opt/llvm/bin:$PATH"
+          export PATH="/opt/homebrew/opt/llvm@${{ matrix.llvm }}/bin:$PATH"
+          export PATH="/usr/local/opt/llvm@${{ matrix.llvm }}/bin:$PATH"
           CC=clang-19 ./configure --with-tail-call-interp
           make all --jobs 4
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3

Include/internal/pycore_opcode_metadata.h

@@ -1581,6 +1581,24 @@ def testfunc(n):
         self.assertNotIn("_COMPARE_OP_INT", uops)
         self.assertIn("_POP_TWO_LOAD_CONST_INLINE_BORROW", uops)
 
+    def test_remove_guard_for_known_type_str(self):
+        def f(n):
+            for i in range(n):
+                false = i == TIER2_THRESHOLD
+                empty = "X"[:false]
+                empty += ""  # Make JIT realize this is a string.
+                if empty:
+                    return 1
+            return 0
+
+        res, ex = self._run_with_optimizer(f, TIER2_THRESHOLD)
+        self.assertEqual(res, 0)
+        self.assertIsNotNone(ex)
+        uops = get_opnames(ex)
+        self.assertIn("_TO_BOOL_STR", uops)
+        self.assertNotIn("_GUARD_TOS_UNICODE", uops)
+
+
 def global_identity(x):
     return x