git-merge --squash

diff --git a/git-compat-util.h b/git-compat-util.h
index 0c98c9937df14bfa8be4f58cae84aa16029be883..b3d4cf532e5728e6b962d0d65789f6e8e4bd7fe5 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -1,6 +1,16 @@
 #ifndef GIT_COMPAT_UTIL_H
 #define GIT_COMPAT_UTIL_H
 
+#ifndef FLEX_ARRAY
+#if defined(__GNUC__) && (__GNUC__ < 3)
+#define FLEX_ARRAY 0
+#else
+#define FLEX_ARRAY /* empty */
+#endif
+#endif
+
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+
 #include <unistd.h>
 #include <stdio.h>
 #include <sys/stat.h>
@@ -30,6 +40,10 @@ extern void usage(const char *err) NORETURN;
 extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
 extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
 
+extern void set_usage_routine(void (*routine)(const char *err) NORETURN);
+extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
+extern void set_error_routine(void (*routine)(const char *err, va_list params));
+
 #ifdef NO_MMAP
 
 #ifndef PROT_READ
@@ -55,6 +69,11 @@ extern int gitfakemunmap(void *start, size_t length);
 extern int gitsetenv(const char *, const char *, int);
 #endif
 
+#ifdef NO_UNSETENV
+#define unsetenv gitunsetenv
+extern void gitunsetenv(const char *);
+#endif
+
 #ifdef NO_STRCASESTR
 #define strcasestr gitstrcasestr
 extern char *gitstrcasestr(const char *haystack, const char *needle);
@@ -63,6 +82,8 @@ extern char *gitstrcasestr(const char *haystack, const char *needle);
 static inline void *xmalloc(size_t size)
 {
        void *ret = malloc(size);
+       if (!ret && !size)
+               ret = malloc(1);
        if (!ret)
                die("Out of memory, malloc failed");
        return ret;
@@ -71,6 +92,8 @@ static inline void *xmalloc(size_t size)
 static inline void *xrealloc(void *ptr, size_t size)
 {
        void *ret = realloc(ptr, size);
+       if (!ret && !size)
+               ret = realloc(ptr, 1);
        if (!ret)
                die("Out of memory, realloc failed");
        return ret;
@@ -79,6 +102,8 @@ static inline void *xrealloc(void *ptr, size_t size)
 static inline void *xcalloc(size_t nmemb, size_t size)
 {
        void *ret = calloc(nmemb, size);
+       if (!ret && (!nmemb || !size))
+               ret = calloc(1, 1);
        if (!ret)
                die("Out of memory, calloc failed");
        return ret;