From: Gerhard Sittig <redacted>
Date: Sat, 25 Dec 2021 18:50:43 +0000 (+0100)
Subject: internal: introduce ALL_ZERO declaration, modelled after libsigrok
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=commitdiff_plain;h=3db0d9750d6947080ae1cfe4ba1108a1687cf24f;hp=a6a5e2c8b0e9ecf5d69d0c237c8e8b717b82b36f

internal: introduce ALL_ZERO declaration, modelled after libsigrok

Declare ALL_ZERO in the common libsigrokdecode-internal.h header file.
The implementation and the comment on its motivation were taken from the
libsigrok implementation, slightly rephrased for improved readability.
---

diff --git a/libsigrokdecode-internal.h b/libsigrokdecode-internal.h
index 329a10a..453e14b 100644
--- a/libsigrokdecode-internal.h
+++ b/libsigrokdecode-internal.h
@@ -27,6 +27,17 @@
 #include <Python.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
 #include "libsigrokdecode.h"
 
+/*
+ * Static definition of tables ending with an all-zero sentinel entry
+ * may raise warnings when compiling with -Wmissing-field-initializers.
+ * GCC suppresses the warning only with { 0 }, clang wants { } instead.
+ */
+#ifdef __clang__
+#  define ALL_ZERO { }
+#else
+#  define ALL_ZERO { 0 }
+#endif
+
 enum {
 	SRD_TERM_ALWAYS_FALSE,
 	SRD_TERM_HIGH,