Fix very high stack usage in SSL debug code
Use a switch instead of an array. The array was very hollow for some enum
types such as mbedtls_ssl_protocol_version (which formerly used small
values, but switched to using the protocol encoding as enum values in Mbed
TLS 3.2.0). Optimizing compilers know how to compile a switch into a lookup
table when the range warrants it.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/ChangeLog.d/ssl_debug_helpers-stack_usage.txt b/ChangeLog.d/ssl_debug_helpers-stack_usage.txt
new file mode 100644
index 0000000..e2c2475
--- /dev/null
+++ b/ChangeLog.d/ssl_debug_helpers-stack_usage.txt
@@ -0,0 +1,3 @@
+Bugfix
+ * Fix very high stack usage in SSL debug code. Reported by Maximilian
+ Gerhardt in #7804.