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-rw-r--r--Misc/NEWS.d/next/Core and Builtins/2023-11-17-16-49-32.gh-issue-111807.QvjP9_.rst1
-rw-r--r--Parser/parser.c6
-rw-r--r--Tools/peg_generator/pegen/c_generator.py6
3 files changed, 11 insertions, 2 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-11-17-16-49-32.gh-issue-111807.QvjP9_.rst b/Misc/NEWS.d/next/Core and Builtins/2023-11-17-16-49-32.gh-issue-111807.QvjP9_.rst
new file mode 100644
index 0000000..6f07584
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2023-11-17-16-49-32.gh-issue-111807.QvjP9_.rst
@@ -0,0 +1 @@
+Lower the max parser stack depth to 1000 under WASI debug builds.
diff --git a/Parser/parser.c b/Parser/parser.c
index ca8e9d0..d27ddd3 100644
--- a/Parser/parser.c
+++ b/Parser/parser.c
@@ -8,7 +8,11 @@
#endif
#ifdef __wasi__
-# define MAXSTACK 4000
+# ifdef Py_DEBUG
+# define MAXSTACK 1000
+# else
+# define MAXSTACK 4000
+# endif
#else
# define MAXSTACK 6000
#endif
diff --git a/Tools/peg_generator/pegen/c_generator.py b/Tools/peg_generator/pegen/c_generator.py
index 301949b..7cdd5de 100644
--- a/Tools/peg_generator/pegen/c_generator.py
+++ b/Tools/peg_generator/pegen/c_generator.py
@@ -38,7 +38,11 @@ EXTENSION_PREFIX = """\
#endif
#ifdef __wasi__
-# define MAXSTACK 4000
+# ifdef Py_DEBUG
+# define MAXSTACK 1000
+# else
+# define MAXSTACK 4000
+# endif
#else
# define MAXSTACK 6000
#endif