diff options
| author | Nicholas Vinson <nvinson234@gmail.com> | 2022-06-15 07:35:28 -0400 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2022-06-15 13:54:44 +0200 |
| commit | 84d12cfacf8ddd857a09435f3d982ab6250d250c (patch) | |
| tree | 1bf88d72d633faf94e80e04e0f93598ce6f4110a /src/expr.c | |
| parent | f6575131e60ab10f131ea3ff36f69af2b6c3f614 (diff) | |
build: fix clang+glibc snprintf substitution error
When building with clang and glibc and -D_FORTIFY_SOURCE=2 is passed to
clang, the snprintf member of the expr_ops and obj_ops structures will
be incorrectly replaced with __builtin_snprintf_chk() which results in
"error: no member named '__builtin___snprintf_chk'" errors at build
time.
This patch changes the member name from 'snprintf' to 'output' to
prevent the replacement.
This bug can be emulated using GCC by undefining the __va_arg_pack macro
before stdio.h is included.
This patch is based on the notes provided in
https://bugs.gentoo.org/807766.
Signed-off-by: Nicholas Vinson <nvinson234@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'src/expr.c')
| -rw-r--r-- | src/expr.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -279,10 +279,10 @@ int nftnl_expr_snprintf(char *buf, size_t remain, const struct nftnl_expr *expr, if (remain) buf[0] = '\0'; - if (!expr->ops->snprintf || type != NFTNL_OUTPUT_DEFAULT) + if (!expr->ops->output || type != NFTNL_OUTPUT_DEFAULT) return 0; - ret = expr->ops->snprintf(buf + offset, remain, flags, expr); + ret = expr->ops->output(buf + offset, remain, flags, expr); SNPRINTF_BUFFER_SIZE(ret, remain, offset); return offset; |