lib/utils/printf: Add vsnprintf alias for Clang.

pfalcon · pfalcon · commit f2ed736b29a8 · 2015-12-12T20:19:42.000+02:00
Was reported to break MacOSX build.
diff --git a/lib/utils/printf.c b/lib/utils/printf.c
@@ -102,7 +102,7 @@ STATIC void strn_print_strn(void *data, const char *str, size_t len) {
     strn_print_env->remain -= len;
 }
 
-#ifdef __GNUC__
+#if defined(__GNUC__) && !defined(__clang__)
 // uClibc requires this alias to be defined, or there may be link errors
 // when linkings against it statically.
 int __GI_vsnprintf(char *str, size_t size, const char *fmt, va_list ap) __attribute__((weak, alias ("vsnprintf")));

Original file line number	Diff line number	Diff line change
`@@ -102,7 +102,7 @@ STATIC void strn_print_strn(void data, const char str, size_t len) {`
`102`	`102`	`strn_print_env->remain -= len;`
`103`	`103`	`}`
`104`	`104`
`105`		`-#ifdef __GNUC__`
	`105`	`+#if defined(__GNUC__) && !defined(__clang__)`
`106`	`106`	`// uClibc requires this alias to be defined, or there may be link errors`
`107`	`107`	`// when linkings against it statically.`
`108`	`108`	`int __GI_vsnprintf(char str, size_t size, const char fmt, va_list ap) __attribute__((weak, alias ("vsnprintf")));`