t6010-merge-base.sh: Depict the octopus test graph

diff --git a/git-compat-util.h b/git-compat-util.h
index 19062534a1d8c8e46e77045cb9e67f437f619133..9f941e42b16d927f738b4911b41344dd2f3ed0da 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -7,7 +7,7 @@
 /*
  * See if our compiler is known to support flexible array members.
  */
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580))
 # define FLEX_ARRAY /* empty */
 #elif defined(__GNUC__)
 # if (__GNUC__ >= 3)
@@ -26,6 +26,7 @@
 #endif
 
 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+#define bitsizeof(x)  (CHAR_BIT * sizeof(x))
 
 #ifdef __GNUC__
 #define TYPEOF(x) (__typeof__(x))
@@ -33,19 +34,38 @@
 #define TYPEOF(x)
 #endif
 
-#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
+#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits))))
 #define HAS_MULTI_BITS(i)  ((i) & ((i) - 1))  /* checks if an integer has more than 1 bit set */
 
+#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
+
 /* Approximation of the length of the decimal representation of this type. */
 #define decimal_length(x)      ((int)(sizeof(x) * 2.56 + 0.5) + 1)
 
-#if !defined(__APPLE__) && !defined(__FreeBSD__)  && !defined(__USLC__) && !defined(_M_UNIX)
+#if defined(__sun__)
+ /*
+  * On Solaris, when _XOPEN_EXTENDED is set, its header file
+  * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE
+  * setting to say we are XPG5 or XPG6.  Also on Solaris,
+  * XPG6 programs must be compiled with a c99 compiler, while
+  * non XPG6 programs must be compiled with a pre-c99 compiler.
+  */
+# if __STDC_VERSION__ - 0 >= 199901L
+# define _XOPEN_SOURCE 600
+# else
+# define _XOPEN_SOURCE 500
+# endif
+#elif !defined(__APPLE__) && !defined(__FreeBSD__)  && !defined(__USLC__) && !defined(_M_UNIX) && !defined(sgi)
 #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */
+#ifndef __sun__
 #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */
 #endif
+#endif
 #define _ALL_SOURCE 1
 #define _GNU_SOURCE 1
 #define _BSD_SOURCE 1
+#define _NETBSD_SOURCE 1
+#define _SGI_SOURCE 1
 
 #include <unistd.h>
 #include <stdio.h>
@@ -96,6 +116,13 @@
 #include "compat/mingw.h"
 #endif /* __MINGW32__ */
 
+#ifndef NO_LIBGEN_H
+#include <libgen.h>
+#else
+#define basename gitbasename
+extern char *gitbasename(char *);
+#endif
+
 #ifndef NO_ICONV
 #include <iconv.h>
 #endif
@@ -152,6 +179,7 @@
 /* General helper functions */
 extern void usage(const char *err) NORETURN;
 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
+extern void die_errno(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
@@ -166,7 +194,7 @@ static inline const char *skip_prefix(const char *str, const char *prefix)
        return strncmp(str, prefix, len) ? NULL : str + len;
 }
 
-#ifdef NO_MMAP
+#if defined(NO_MMAP) || defined(USE_WIN32_MMAP)
 
 #ifndef PROT_READ
 #define PROT_READ 1
@@ -180,13 +208,19 @@ static inline const char *skip_prefix(const char *str, const char *prefix)
 extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);
 extern int git_munmap(void *start, size_t length);
 
+#else /* NO_MMAP || USE_WIN32_MMAP */
+
+#include <sys/mman.h>
+
+#endif /* NO_MMAP || USE_WIN32_MMAP */
+
+#ifdef NO_MMAP
+
 /* This value must be multiple of (pagesize * 2) */
 #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024)
 
 #else /* NO_MMAP */
 
-#include <sys/mman.h>
-
 /* This value must be multiple of (pagesize * 2) */
 #define DEFAULT_PACKED_GIT_WINDOW_SIZE \
        (sizeof(void*) >= 8 \
@@ -225,6 +259,11 @@ extern int gitsetenv(const char *, const char *, int);
 extern char *gitmkdtemp(char *);
 #endif
 
+#ifdef NO_MKSTEMPS
+#define mkstemps gitmkstemps
+extern int gitmkstemps(char *, int);
+#endif
+
 #ifdef NO_UNSETENV
 #define unsetenv gitunsetenv
 extern void gitunsetenv(const char *);
@@ -402,4 +441,16 @@ void git_qsort(void *base, size_t nmemb, size_t size,
 #endif
 #endif
 
+#ifdef UNRELIABLE_FSTAT
+#define fstat_is_reliable() 0
+#else
+#define fstat_is_reliable() 1
+#endif
+
+/*
+ * Preserves errno, prints a message, but gives no warning for ENOENT.
+ * Always returns the return value of unlink(2).
+ */
+int unlink_or_warn(const char *path);
+
 #endif