diff --git a/git-compat-util.h b/git-compat-util.h
index 877096ecb09e524174ff22db3722d6428f43bcf4..56dce8588472e8535c1482ed21818f413abb4dbf 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define bitsizeof(x) (CHAR_BIT * sizeof(x))
+#define maximum_signed_value_of_type(a) \
+ (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a)))
+
+/*
+ * Signed integer overflow is undefined in C, so here's a helper macro
+ * to detect if the sum of two integers will overflow.
+ *
+ * Requires: a >= 0, typeof(a) equals typeof(b)
+ */
+#define signed_add_overflows(a, b) \
+ ((b) > maximum_signed_value_of_type(a) - (a))
+
#ifdef __GNUC__
#define TYPEOF(x) (__typeof__(x))
#else
#include <assert.h>
#include <regex.h>
#include <utime.h>
+#include <syslog.h>
#ifndef __MINGW32__
#include <sys/wait.h>
#include <sys/poll.h>
#define PRIx32 "x"
#endif
+#ifndef PRIo32
+#define PRIo32 "o"
+#endif
+
#ifndef PATH_SEP
#define PATH_SEP ':'
#endif
}
#endif
+#ifdef NO_INET_PTON
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
+#ifdef NO_INET_NTOP
+const char *inet_ntop(int af, const void *src, char *dst, size_t size);
+#endif
+
extern void release_pack_memory(size_t, int);
typedef void (*try_to_free_t)(size_t);