Changeset d16fc78 in mainline for boot/generic/include/printf.h

Timestamp:

2010-11-26T01:07:42Z (14 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

855e0d8

Parents:

1e27d85

Message:

• verify the correctness of printf()'s and friends' attributes in compile time (use NVERIFY_PRINTF define to suppress the checks)
• separate non-C99 compliant printf() checks to a standalone 'print5' test and u

se NVERIFY_PRINTF for it

• improve 'print2' test (use portable constant macros and explicit types)

File:

• boot/generic/include/printf.h (modified) (1 diff)

boot/generic/include/printf.h

@@ -36 +36 @@
 #include <stdarg.h>
 
+#ifndef NVERIFY_PRINTF
+
+#define PRINTF_ATTRIBUTE(start, end) \
+        __attribute__((format(gnu_printf, start, end)))
+
+#else /* NVERIFY_PRINTF */
+
+#define PRINTF_ATTRIBUTE(start, end)
+
+#endif /* NVERIFY_PRINTF */
+
 #define EOF  (-1)
 
 extern int puts(const char *);
-extern int printf(const char *, ...);
+extern int printf(const char *, ...)
+    PRINTF_ATTRIBUTE(1, 2);
 extern int vprintf(const char *, va_list);