[Bug 38327] New: Uninitialized matrix

https://bugs.winehq.org/show_bug.cgi?id=38327

Bug ID: 38327
           Summary: Uninitialized matrix
           Product: Wine
           Version: 1.7.39
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

I got warning
-----
glsl_shader.c: In function ‘shader_glsl_load_constants’:
glsl_shader.c:799: warning: ‘temp._44’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._44’ was declared here
glsl_shader.c:799: warning: ‘temp._43’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._43’ was declared here
glsl_shader.c:799: warning: ‘temp._42’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._42’ was declared here
glsl_shader.c:799: warning: ‘temp._41’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._41’ was declared here
glsl_shader.c:799: warning: ‘temp._34’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._34’ was declared here
glsl_shader.c:799: warning: ‘temp._24’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._24’ was declared here
glsl_shader.c:799: warning: ‘temp._14’ is used uninitialized in this function
glsl_shader.c:744: note: ‘temp._14’ was declared here
----
this is a function
---
/* Taken and adapted from Mesa. */
static BOOL invert_matrix_3d(struct wined3d_matrix *out, const struct
wined3d_matrix *in)
{
    float pos, neg, t, det;
    struct wined3d_matrix temp;
...
    *out = temp;
---
The function is for matrix 3x3 while wined3d_matrix is 4x4.
But local variable (temp) is not initialized and may contain arbitrary values.
Should the matrix to be zeroed explicitly or there must be function to invert
4x4 matrix?