bpo-44131: Test Py_FrozenMain() (GH-26126)

* Add test_frozenmain to test_embed
* Add Programs/test_frozenmain.py
* Add Programs/freeze_test_frozenmain.py
* Add Programs/test_frozenmain.h
* Add make regen-test-frozenmain
* Add test_frozenmain command to Programs/_testembed
* _testembed.c: add error(msg) function

1 files changed, 9 insertions, 11 deletions

diff --git a/Tools/freeze/makefreeze.py b/Tools/freeze/makefreeze.py
index 64e3e6b..d7d05db 100644
--- a/Tools/freeze/makefreeze.py
+++ b/Tools/freeze/makefreeze.py
@@ -74,14 +74,12 @@ def makefreeze(base, dict, debug=0, entry_point=None, fail_import=()):
 # Write a C initializer for a module containing the frozen python code.
 # The array is called M_<mod>.
 
-def writecode(outfp, mod, str):
-    outfp.write('unsigned char M_%s[] = {' % mod)
-    for i in range(0, len(str), 16):
-        outfp.write('\n\t')
-        for c in bytes(str[i:i+16]):
-            outfp.write('%d,' % c)
-    outfp.write('\n};\n')
-
-## def writecode(outfp, mod, str):
-##     outfp.write('unsigned char M_%s[%d] = "%s";\n' % (mod, len(str),
-##     '\\"'.join(map(lambda s: repr(s)[1:-1], str.split('"')))))
+def writecode(fp, mod, data):
+    print('unsigned char M_%s[] = {' % mod, file=fp)
+    indent = ' ' * 4
+    for i in range(0, len(data), 16):
+        print(indent, file=fp, end='')
+        for c in bytes(data[i:i+16]):
+            print('%d,' % c, file=fp, end='')
+        print('', file=fp)
+    print('};', file=fp)