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lib: fix transparent_union for clang++

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clang does not accept __attribute__((transparent_union)) in C++ source
code.  We don't need it there anyway so let's just limit it to C.

Signed-off-by: David Lamparter <equinox@diac24.net>
This commit is contained in:
David Lamparter 2021-03-27 20:55:42 +01:00
parent 694df37daf
commit 5d38779233
1 changed files with 7 additions and 2 deletions
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9
lib/prefix.h
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@ -315,10 +315,12 @@ struct prefix_sg {
#ifndef __cplusplus
#define prefixtype(uname, typename, fieldname) \
typename *fieldname;
#define TRANSPARENT_UNION __attribute__((transparent_union))
#else
#define prefixtype(uname, typename, fieldname) \
typename *fieldname; \
uname(typename *x) { this->fieldname = x; }
#define TRANSPARENT_UNION
#endif
union prefixptr {
@ -328,7 +330,7 @@ union prefixptr {
prefixtype(prefixptr, struct prefix_evpn, evp)
prefixtype(prefixptr, struct prefix_fs, fs)
prefixtype(prefixptr, struct prefix_rd, rd)
} __attribute__((transparent_union));
} TRANSPARENT_UNION;
union prefixconstptr {
prefixtype(prefixconstptr, const struct prefix, p)
@ -337,7 +339,10 @@ union prefixconstptr {
prefixtype(prefixconstptr, const struct prefix_evpn, evp)
prefixtype(prefixconstptr, const struct prefix_fs, fs)
prefixtype(prefixconstptr, const struct prefix_rd, rd)
} __attribute__((transparent_union));
} TRANSPARENT_UNION;
#undef prefixtype
#undef TRANSPARENT_UNION
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16