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radeonsi: fix undefined behavior (memcpy arguments must be non-NULL)

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Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle
2016-04-29 23:41:59 -05:00
parent 146927ce7b
commit b9e6e8e7d4
1 changed files with 3 additions and 1 deletions
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4
src/gallium/drivers/radeonsi/si_state_shaders.c
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@@ -63,7 +63,9 @@ static void *si_get_tgsi_binary(struct si_shader_selector *sel)
/** Copy "data" to "ptr" and return the next dword following copied data. */ /** Copy "data" to "ptr" and return the next dword following copied data. */
static uint32_t *write_data(uint32_t *ptr, const void *data, unsigned size) static uint32_t *write_data(uint32_t *ptr, const void *data, unsigned size)
{ {
memcpy(ptr, data, size); /* data may be NULL if size == 0 */
if (size)
memcpy(ptr, data, size);
ptr += DIV_ROUND_UP(size, 4); ptr += DIV_ROUND_UP(size, 4);
return ptr; return ptr;
} }