Fix error handling with malloc, memalign etc. Introduce xmemalign().

The idea is to panic() when there is no memory available for normal
operation. Exception: code which can consume arbitrary amount of RAM
(example: files allocated in ramfs) must report error instead of panic().

This patch also fixes code which didn't check for NULL from malloc() etc.

Usage: malloc(), memalign() return NULL when out of RAM.
xmalloc(), xmemalign() always return non-NULL or panic().

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 1 insertions, 3 deletions

diff --git a/commands/edit.c b/commands/edit.c
index ca40d5921b..3519b096fd 100644
--- a/commands/edit.c
+++ b/commands/edit.c
@@ -184,10 +184,8 @@ static struct line *line_realloc(int len, struct line *line)
 {
 	int size = 32;
 
-	if (!line) {
+	if (!line)
 		line = xzalloc(sizeof(struct line));
-		line->data = malloc(32);
-	}
 
 	while (size < len)
 		size <<= 1;