[PATCH-for-5.1 v2 48/54] scripts/coccinelle: Use &error_abort in TypeInfo::instance_init()

[Philippe Mathieu-Daudé]

The instance_init() calls are not suppose to fail. Add a
Coccinelle script to use &error_abort instead of ignoring
errors by using a NULL Error*.

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 .../use-error_abort-in-instance_init.cocci    | 52 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 53 insertions(+)
 create mode 100644 scripts/coccinelle/use-error_abort-in-instance_init.cocci

diff --git a/scripts/coccinelle/use-error_abort-in-instance_init.cocci 
b/scripts/coccinelle/use-error_abort-in-instance_init.cocci
new file mode 100644
index 0000000000..8302d74a0c
--- /dev/null
+++ b/scripts/coccinelle/use-error_abort-in-instance_init.cocci
@@ -0,0 +1,52 @@
+// Use &error_abort in TypeInfo::instance_init()
+//
+// Copyright: (C) 2020 Philippe Mathieu-Daudé
+// This work is licensed under the terms of the GNU GPLv2 or later.
+//
+// spatch \
+//  --macro-file scripts/cocci-macro-file.h --include-headers \
+//  --sp-file scripts/coccinelle/use-error_abort-in-instance_init.cocci \
+//  --keep-comments --in-place
+//
+// Inspired by https://www.mail-archive.com/address@hidden/msg692500.html
+// and https://www.mail-archive.com/address@hidden/msg693637.html
+
+
+@ has_qapi_error @
+@@
+    #include "qapi/error.h"
+
+
+@ match_instance_init @
+TypeInfo info;
+identifier instance_initfn;
+@@
+    info.instance_init = instance_initfn;
+
+
+@ use_error_abort @
+identifier match_instance_init.instance_initfn;
+identifier func_with_error;
+expression parentobj, propname, childobj, size, type, errp;
+position pos;
+@@
+void instance_initfn(...)
+{
+   <+...
+(
+   object_initialize_child(parentobj, propname,
+                           childobj, size, type,
+                           errp, NULL);
+|
+   func_with_error@pos(...,
+-                           NULL);
++                           &error_abort);
+)
+   ...+>
+}
+
+
+@script:python depends on use_error_abort && !has_qapi_error@
+p << use_error_abort.pos;
+@@
+print('[[manual edit required, %s misses #include "qapi/error.h"]]' % 
p[0].file)
diff --git a/MAINTAINERS b/MAINTAINERS
index 14de2a31dc..ae71a0a4b0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2059,6 +2059,7 @@ F: scripts/coccinelle/error-use-after-free.cocci
 F: scripts/coccinelle/error_propagate_null.cocci
 F: scripts/coccinelle/remove_local_err.cocci
 F: scripts/coccinelle/simplify-init-realize-error_propagate.cocci
+F: scripts/coccinelle/use-error_abort-in-instance_init.cocci
 F: scripts/coccinelle/use-error_fatal.cocci
 F: scripts/coccinelle/use-error_propagate-in-realize.cocci
 
-- 
2.21.1