kconfig: add xrealloc() helper

We already have xmalloc(), xcalloc().  Add xrealloc() as well
to save tedious error handling.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
index 0e76042473cc..138894ef49ea 100644
--- a/scripts/kconfig/util.c
+++ b/scripts/kconfig/util.c
@@ -104,7 +104,7 @@ void str_append(struct gstr *gs, const char *s)
         if (s) {
                 l = strlen(gs->s) + strlen(s) + 1;
                 if (l > gs->len) {
-                        gs->s   = realloc(gs->s, l);
+                        gs->s = xrealloc(gs->s, l);
                         gs->len = l;
                 }
                 strcat(gs->s, s);
@@ -145,3 +145,12 @@ void *xcalloc(size_t nmemb, size_t size)
         fprintf(stderr, "Out of memory.\n");
         exit(1);
 }
+
+void *xrealloc(void *p, size_t size)
+{
+        p = realloc(p, size);
+        if (p)
+                return p;
+        fprintf(stderr, "Out of memory.\n");
+        exit(1);
+}