[PATCH v2] utils/fifo8: change fatal errors from abort() to assert()

[Mark Cave-Ayland]

Developer errors are better represented with assert() rather than abort(). Also
improve the strictness of the checks by using range checks within the assert()
rather than converting the existing equality checks to inequality checks.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 util/fifo8.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/util/fifo8.c b/util/fifo8.c
index a5dd789ce5..d4d1c135e0 100644
--- a/util/fifo8.c
+++ b/util/fifo8.c
@@ -31,9 +31,7 @@ void fifo8_destroy(Fifo8 *fifo)
 
 void fifo8_push(Fifo8 *fifo, uint8_t data)
 {
-    if (fifo->num == fifo->capacity) {
-        abort();
-    }
+    assert(fifo->num < fifo->capacity);
     fifo->data[(fifo->head + fifo->num) % fifo->capacity] = data;
     fifo->num++;
 }
@@ -42,9 +40,7 @@ void fifo8_push_all(Fifo8 *fifo, const uint8_t *data, 
uint32_t num)
 {
     uint32_t start, avail;
 
-    if (fifo->num + num > fifo->capacity) {
-        abort();
-    }
+    assert(fifo->num + num <= fifo->capacity);
 
     start = (fifo->head + fifo->num) % fifo->capacity;
 
@@ -63,9 +59,7 @@ uint8_t fifo8_pop(Fifo8 *fifo)
 {
     uint8_t ret;
 
-    if (fifo->num == 0) {
-        abort();
-    }
+    assert(fifo->num > 0);
     ret = fifo->data[fifo->head++];
     fifo->head %= fifo->capacity;
     fifo->num--;
@@ -76,9 +70,7 @@ const uint8_t *fifo8_pop_buf(Fifo8 *fifo, uint32_t max, 
uint32_t *num)
 {
     uint8_t *ret;
 
-    if (max == 0 || max > fifo->num) {
-        abort();
-    }
+    assert(max > 0 && max <= fifo->num);
     *num = MIN(fifo->capacity - fifo->head, max);
     ret = &fifo->data[fifo->head];
     fifo->head += *num;
-- 
2.20.1