fix gcc12 build

fix-gcc12-build.patch

@@ -0,0 +1,12 @@
+diff -up SPIRV-Tools-45dd184c790d6bfc78a5a74a10c37e888b1823fa/source/spirv_target_env.cpp.dma ./SPIRV-Tools-45dd184c790d6bfc78a5a74a10c37e888b1823fa/source/spirv_target_env.cpp
+--- SPIRV-Tools-45dd184c790d6bfc78a5a74a10c37e888b1823fa/source/spirv_target_env.cpp.dma	2022-02-16 08:20:38.927239298 +1000
++++ SPIRV-Tools-45dd184c790d6bfc78a5a74a10c37e888b1823fa/source/spirv_target_env.cpp	2022-02-16 08:20:42.262301854 +1000
+@@ -397,6 +397,8 @@ std::string spvLogStringForEnv(spv_targe
+   return "Unknown";
+ }
+ 
++// workaround gcc12/stdlibc++ -Wrestrict bug.
++#pragma GCC diagnostic ignore "-Wrestrict"
+ std::string spvTargetEnvList(const int pad, const int wrap) {
+   std::string ret;
+   size_t max_line_len = wrap - pad;  // The first line isn't padded

spirv-tools.spec

@@ -14,6 +14,8 @@ License:        ASL 2.0
 URL:            https://github.com/KhronosGroup/SPIRV-Tools
 Source0:        %url/archive/%{commit}.tar.gz#/%{name}-%{commit}.tar.gz
 
+Patch0: fix-gcc12-build.patch
+
 BuildRequires:  cmake3
 BuildRequires:  gcc-c++
 BuildRequires:  ninja-build