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- From 7bbde67cb2dc52c04bd7020689a1227bddfa1b06 Mon Sep 17 00:00:00 2001
- From: Damien George <damien.p.george@gmail.com>
- Date: Wed, 6 Feb 2019 01:12:51 +1100
- Subject: [PATCH] lib/utils/printf: Exclude __GI_vsnprintf alias for gcc 9 and
- above.
- See issue #4457.
- Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
- [Retrieved from:
- https://github.com/micropython/micropython/commit/7bbde67cb2dc52c04bd7020689a1227bddfa1b06]
- ---
- lib/utils/printf.c | 4 +++-
- 1 file changed, 3 insertions(+), 1 deletion(-)
- diff --git a/lib/utils/printf.c b/lib/utils/printf.c
- index 1ceeea39ff..0c21fc4c0a 100644
- --- a/lib/utils/printf.c
- +++ b/lib/utils/printf.c
- @@ -99,9 +99,11 @@ STATIC void strn_print_strn(void *data, const char *str, size_t len) {
- strn_print_env->remain -= len;
- }
-
- -#if defined(__GNUC__) && !defined(__clang__)
- +#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 9
- // uClibc requires this alias to be defined, or there may be link errors
- // when linkings against it statically.
- +// GCC 9 gives a warning about missing attributes so it's excluded until
- +// uClibc+GCC9 support is needed.
- int __GI_vsnprintf(char *str, size_t size, const char *fmt, va_list ap) __attribute__((weak, alias ("vsnprintf")));
- #endif
-
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