alignment changes

Author: tom-pytel

Modules/arraymodule.c

@@ -42,12 +42,15 @@ struct arraydescr {
     int is_signed;
 };
 
+#ifdef MS_WINDOWS
+#define Py_ALIGN_AS(x) __declspec(align(x))
+#else
+#define Py_ALIGN_AS(x) _Alignas(x)
+#endif
+
 typedef struct {
-    union {
-        Py_ssize_t allocated;
-        double __alignment_padding; /* In case Py_ssize_t is 4 bytes */
-    };
-    char items[];
+    Py_ssize_t allocated;
+    Py_ALIGN_AS(8) char items[];
 } arraydata;
 
 typedef struct arrayobject {

Tools/c-analyzer/c_parser/parser/_regexes.py

@@ -59,6 +59,8 @@ def _ind(text, level=1, edges='both'):
             register |
             static |
             _Thread_local |
+            _Alignas |
+            _Alignof |
             typedef |
 
             const |
@@ -154,6 +156,17 @@ def _ind(text, level=1, edges='both'):
 TYPE_QUALIFIER = r'(?: \b (?: const | volatile ) \b )'
 PTR_QUALIFIER = rf'(?: [*] (?: \s* {TYPE_QUALIFIER} )? )'
 
+ALIGNMENT_SPECIFIER = textwrap.dedent(r'''
+    # alignment specifier
+    (?:
+        _Alignas
+        \s* [(]
+        [^)]*
+        [)]
+    )
+    # end alignment specifier
+    ''')
+
 TYPE_SPEC = textwrap.dedent(rf'''
     # type spec
     (?:
@@ -318,6 +331,9 @@ def _ind(text, level=1, edges='both'):
         (?:
             # typed member
             (?:
+                (?:  # <ALIGNMENT SPECIFIER>
+                    \s* {ALIGNMENT_SPECIFIER} \s*
+                )?
                 # Technically it doesn't have to have a type...
                 (?:  # <SPECIFIER_QUALIFIER>
                     (?: {TYPE_QUALIFIER} \s* )?