From: "Emilio G. Cota" <cota@xxxxxxxxx>
gcc defines __CHAR_BIT__ as a pre-defined macro.
Define __CHAR_BIT__ in sparse so that code that needs it (e.g. code
using CHAR_BIT from limits.h) does not generate false warnings.
Signed-off-by: Emilio G. Cota <cota@xxxxxxxxx>
---
lib.c | 1 +
validation/builtin_char_bit.c | 7 +++++++
2 files changed, 8 insertions(+)
create mode 100644 validation/builtin_char_bit.c
diff --git a/lib.c b/lib.c
index fe20f93..bbdb9b7 100644
--- a/lib.c
+++ b/lib.c
@@ -911,6 +911,7 @@ void create_builtin_stream(void)
add_pre_buffer("#weak_define __LONG_LONG_MAX__ " STRINGIFY(__LONG_LONG_MAX__) "\n");
add_pre_buffer("#weak_define __WCHAR_MAX__ " STRINGIFY(__WCHAR_MAX__) "\n");
add_pre_buffer("#weak_define __SIZEOF_POINTER__ " STRINGIFY(__SIZEOF_POINTER__) "\n");
+ add_pre_buffer("#weak_define __CHAR_BIT__ " STRINGIFY(__CHAR_BIT__) "\n");
}
static struct symbol_list *sparse_tokenstream(struct token *token)
diff --git a/validation/builtin_char_bit.c b/validation/builtin_char_bit.c
new file mode 100644
index 0000000..30e6bed
--- /dev/null
+++ b/validation/builtin_char_bit.c
@@ -0,0 +1,7 @@
+#include <limits.h>
+
+static unsigned int word_bits = sizeof(unsigned int) * CHAR_BIT;
+
+/*
+ * check-name: __CHAR_BIT__
+ */
--
1.8.3
--
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