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shared: add NM_CMP_DIRECT_UNSAFE() macro

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Thomas Haller 2020-07-27 15:17:54 +02:00
parent 62c1a1b5b2
commit 443859f71f
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1 changed files with 6 additions and 0 deletions
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6
shared/nm-glib-aux/nm-shared-utils.h
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@ -262,6 +262,12 @@ gboolean nm_utils_ipaddr_is_normalized (int addr_family,
return (_a < _b) ? -1 : 1; \
} G_STMT_END
#define NM_CMP_DIRECT_UNSAFE(a, b) \
G_STMT_START { \
if ((a) != (b)) \
return ((a) < (b)) ? -1 : 1; \
} G_STMT_END
/* In the general case, direct pointer comparison is undefined behavior in C.
* Avoid that by casting pointers to void* and then to uintptr_t. This comparison
* is not really meaningful, except that it provides some kind of stable sort order