diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 85eac01..e4da7b6 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -152,6 +152,14 @@
 scripts/config.pl unset MBEDTLS_FS_IO
 CC=gcc CFLAGS='-Werror -O0' make
 
+# catch compile bugs in _uninit functions
+msg "build: full config with NO_STD_FUNCTION, make, gcc" # ~ 30s
+cleanup
+cp "$CONFIG_H" "$CONFIG_BAK"
+scripts/config.pl full
+scripts/config.pl set MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
+CC=gcc CFLAGS='-Werror -O0' make
+
 msg "build: full config except ssl_srv.c, make, gcc" # ~ 30s
 cleanup
 cp "$CONFIG_H" "$CONFIG_BAK"