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vkd3d-shader/hlsl: Introduce hlsl_calloc().

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This is just a wrapper of vkd3d_calloc(), that has the advantage of
checking for multiplication overflow.
This commit is contained in:
Francisco Casas 2023-05-03 15:39:58 -04:00 committed by Alexandre Julliard
parent ef7cf9b1ad
commit fd38c58112
Notes: Alexandre Julliard 2023-05-08 22:34:16 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/159
2 changed files with 12 additions and 3 deletions
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6
libs/vkd3d-shader/hlsl.c
View File

@ -443,7 +443,7 @@ static bool init_deref(struct hlsl_ctx *ctx, struct hlsl_deref *deref, struct hl
return true;
}
if (!(deref->path = hlsl_alloc(ctx, sizeof(*deref->path) * deref->path_len)))
if (!(deref->path = hlsl_calloc(ctx, deref->path_len, sizeof(*deref->path))))
{
deref->var = NULL;
deref->path_len = 0;
@ -882,7 +882,7 @@ struct hlsl_type *hlsl_type_clone(struct hlsl_ctx *ctx, struct hlsl_type *old,
type->e.record.field_count = field_count;
if (!(type->e.record.fields = hlsl_alloc(ctx, field_count * sizeof(*type->e.record.fields))))
if (!(type->e.record.fields = hlsl_calloc(ctx, field_count, sizeof(*type->e.record.fields))))
{
vkd3d_free((void *)type->name);
vkd3d_free(type);
@ -974,7 +974,7 @@ struct hlsl_ir_var *hlsl_new_var(struct hlsl_ctx *ctx, const char *name, struct
if (obj_count == 0)
continue;
if (!(var->objects_usage[k] = hlsl_alloc(ctx, sizeof(*var->objects_usage[0]) * obj_count)))
if (!(var->objects_usage[k] = hlsl_calloc(ctx, obj_count, sizeof(*var->objects_usage[0]))))
{
for (i = 0; i < k; ++i)
vkd3d_free(var->objects_usage[i]);

9
libs/vkd3d-shader/hlsl.h
View File

@ -939,6 +939,15 @@ static inline void *hlsl_alloc(struct hlsl_ctx *ctx, size_t size)
return ptr;
}
static inline void *hlsl_calloc(struct hlsl_ctx *ctx, size_t count, size_t size)
{
void *ptr = vkd3d_calloc(count, size);
if (!ptr)
ctx->result = VKD3D_ERROR_OUT_OF_MEMORY;
return ptr;
}
static inline void *hlsl_realloc(struct hlsl_ctx *ctx, void *ptr, size_t size)
{
void *ret = vkd3d_realloc(ptr, size);