e85a747e29
The #version directive can only handle decimal constants. Enforce that
the value is a decimal constant.
Section 3.3 (Preprocessor) of the GLSL 4.50 spec says:
The language version a shader is written to is specified by
#version number profile opt
where number must be a version of the language, following the same
convention as __VERSION__ above.
The same section also says:
__VERSION__ will substitute a decimal integer reflecting the version
number of the OpenGL shading language.
Use a separate flag to track whether or not the #version line has been
encountered. Any possible sentinel (0 is currently used) could be
specified in a #version directive. This would lead to trying to
(internally) redefine __VERSION__. Since there is no parser location
for this addition, NULL is passed. This eventually results in a NULL
dereference and a segfault.
Attempts to use -1 as the sentinel would also fail if '#version
4294967295' or '#version 18446744073709551615' were used. We should
have piglit tests for both of these.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97420
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Cc: mesa-stable@lists.freedesktop.org
Cc: Juan A. Suarez Romero <jasuarez@igalia.com>
Cc: Karol Herbst <karolherbst@gmail.com>
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see http://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.