[Mesa-dev] [PATCH] radv: don't assert on empty hash table

[Grazvydas Ignotas]

Currently if table_size is 0, it's falling through to:

unreachable("hash table should never be full");

But table_size can be 0 when RADV_DEBUG=nocache is set, or when the
table allocation fails (which is not considered an error).

Fixes: f4e499ec791 "radv: add initial non-conformant radv vulkan driver"
Signed-off-by: Grazvydas Ignotas <notasas at gmail.com>
---
 src/amd/vulkan/radv_pipeline_cache.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/amd/vulkan/radv_pipeline_cache.c b/src/amd/vulkan/radv_pipeline_cache.c
index 99a614d..beed35b 100644
--- a/src/amd/vulkan/radv_pipeline_cache.c
+++ b/src/amd/vulkan/radv_pipeline_cache.c
@@ -116,10 +116,13 @@ radv_pipeline_cache_search_unlocked(struct radv_pipeline_cache *cache,
 				    const unsigned char *sha1)
 {
 	const uint32_t mask = cache->table_size - 1;
 	const uint32_t start = (*(uint32_t *) sha1);
 
+	if (cache->table_size == 0)
+		return NULL;
+
 	for (uint32_t i = 0; i < cache->table_size; i++) {
 		const uint32_t index = (start + i) & mask;
 		struct cache_entry *entry = cache->hash_table[index];
 
 		if (!entry)
-- 
2.7.4