[Bug 38327] New: Uninitialized matrix
wine-bugs at winehq.org
wine-bugs at winehq.org
Tue Mar 31 06:22:53 CDT 2015
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: wine-bugs at winehq.org
Reporter: isakov-sl at bk.ru
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?
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