Clang crash on Vulkan-Layers 1.4.250: <eof> parser at end of file

Clang told me to open a ticket, so here it is:

```
root in /home/maru
❯ emerge -av1u media-libs/vulkan-layers

These are the packages that would be merged, in order:

Calculating dependencies... done!
Dependency resolution took 8.83 s (backtrack: 0/20).

[ebuild U ] media-libs/vulkan-layers-1.4.350.0::gentoo [1.4.341.0::gentoo] USE="X test wayland" ABI_X86="32 (64) (-x32)" 0 KiB

Total: 1 package (1 upgrade), Size of downloads: 0 KiB

... (it starts doing its thing until the error) ...

[136/543] /usr/lib/llvm/22/bin/clang++ -m32 -mfpmath=sse -DUSE_CUSTOM_HASH_MAP -DVK_ENABLE_BETA_EXTENSIONS -DVK_USE_PLATFORM_WAYLAND_KHR -DVK_USE_PLATFORM_XCB_KHR -DVK_USE_PLATFORM_XLIB_KHR -DVK_USE_PLATFORM_XLIB_XRANDR_EXT -Dvvl_EXPORTS -I/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/. -I/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/vulkan -isystem /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/external -march=native -O2 -pipe -flto -DNDEBUG -std=c++17 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -Wpointer-arith -Wconversion -Wimplicit-fallthrough -Wstring-conversion -Wno-unused-parameter -Wno-sign-conversion -Wno-implicit-int-conversion -MD -MT layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o -MF layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o.d -o layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o -c /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/gpuav/validation_cmd/gpuav_ray_tracing.cpp
FAILED: [code=1] layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o
/usr/lib/llvm/22/bin/clang++ -m32 -mfpmath=sse -DUSE_CUSTOM_HASH_MAP -DVK_ENABLE_BETA_EXTENSIONS -DVK_USE_PLATFORM_WAYLAND_KHR -DVK_USE_PLATFORM_XCB_KHR -DVK_USE_PLATFORM_XLIB_KHR -DVK_USE_PLATFORM_XLIB_XRANDR_EXT -Dvvl_EXPORTS -I/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/. -I/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/vulkan -isystem /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/external -march=native -O2 -pipe -flto -DNDEBUG -std=c++17 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -Wpointer-arith -Wconversion -Wimplicit-fallthrough -Wstring-conversion -Wno-unused-parameter -Wno-sign-conversion -Wno-implicit-int-conversion -MD -MT layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o -MF layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o.d -o layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o -c /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/gpuav/validation_cmd/gpuav_ray_tracing.cpp
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /usr/lib/llvm/22/bin/clang++ -m32 -mfpmath=sse -DUSE_CUSTOM_HASH_MAP -DVK_ENABLE_BETA_EXTENSIONS -DVK_USE_PLATFORM_WAYLAND_KHR -DVK_USE_PLATFORM_XCB_KHR -DVK_USE_PLATFORM_XLIB_KHR -DVK_USE_PLATFORM_XLIB_XRANDR_EXT -Dvvl_EXPORTS -I/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/. -I/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/vulkan -isystem /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/external -march=native -O2 -pipe -flto -DNDEBUG -std=c++17 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -Wpointer-arith -Wconversion -Wimplicit-fallthrough -Wstring-conversion -Wno-unused-parameter -Wno-sign-conversion -Wno-implicit-int-conversion -MD -MT layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o -MF layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o.d -o layers/CMakeFiles/vvl.dir/gpuav/validation_cmd/gpuav_ray_tracing.cpp.o -c /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/gpuav/validation_cmd/gpuav_ray_tracing.cpp
1. parser at end of file
2. /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/./utils/cast_utils.h:67:24: instantiating function definition 'CastToUint64'
3. /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0/layers/./utils/cast_utils.h:34:20: instantiating function definition 'CastToUint'
#0 0x00007f63b0e0ae8a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/lib/llvm/22/bin/../lib64/libLLVM.so.22.1+0x480ae8a)
#1 0x00007f63b0e09b7b llvm::sys::RunSignalHandlers() (/usr/lib/llvm/22/bin/../lib64/libLLVM.so.22.1+0x4809b7b)
#2 0x00007f63b0d0bc84 (/usr/lib/llvm/22/bin/../lib64/libLLVM.so.22.1+0x470bc84)
#3 0x00007f63ac0588b0 (/usr/lib64/libc.so.6+0x418b0)
#4 0x00007f63b74df939 clang::Expr::IgnoreParenNoopCasts(clang::ASTContext const&) (/usr/lib/llvm/22/bin/../lib64/libclang-cpp.so.22.1+0x18df939)
#5 0xfe3f70f0701dfcdd
clang++: error: clang frontend command failed with exit code 139 (use -v to see invocation)
clang version 22.1.8
Target: i386-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm/22/bin
Configuration file: /etc/clang/22/i386-pc-linux-gnu-clang++.cfg
clang++: note: diagnostic msg:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang++: note: diagnostic msg: /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/gpuav_ray_tracing-3e0781.cpp
clang++: note: diagnostic msg: /var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/gpuav_ray_tracing-3e0781.sh
clang++: note: diagnostic msg:

********************
ninja: build stopped: subcommand failed.
* ERROR: media-libs/vulkan-layers-1.4.350.0::gentoo failed (compile phase):
* ninja -v -l16 -j8 failed
*
* Call stack:
* ebuild.sh, line 143: Called src_compile
* environment, line 3548: Called cmake-multilib_src_compile
* environment, line 1389: Called multilib-minimal_src_compile
* environment, line 2465: Called multilib_foreach_abi 'multilib-minimal_abi_src_compile'
* environment, line 2737: Called multibuild_foreach_variant '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile'
* environment, line 2425: Called _multibuild_run '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile'
* environment, line 2423: Called _multilib_multibuild_wrapper 'multilib-minimal_abi_src_compile'
* environment, line 600: Called multilib-minimal_abi_src_compile
* environment, line 2459: Called multilib_src_compile
* environment, line 2958: Called cmake_src_compile
* environment, line 1520: Called cmake_build
* environment, line 1430: Called eninja
* environment, line 1779: Called die
* The specific snippet of code:
* "$@" || die -n "${*} failed"
*
* If you need support, post the output of `emerge --info '=media-libs/vulkan-layers-1.4.350.0::gentoo'`,
* the complete build log and the output of `emerge -pqv '=media-libs/vulkan-layers-1.4.350.0::gentoo'`.
* The complete build log is located at '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/environment'.
* Working directory: '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0_build-abi_x86_32.x86'
* S: '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0'

>>> Failed to emerge media-libs/vulkan-layers-1.4.350.0, Log file:

>>> '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/build.log'

* Messages for package media-libs/vulkan-layers-1.4.350.0:

* ERROR: media-libs/vulkan-layers-1.4.350.0::gentoo failed (compile phase):
* ninja -v -l16 -j8 failed
* Call stack:
* ebuild.sh, line 143: Called src_compile
* environment, line 3548: Called cmake-multilib_src_compile
* environment, line 1389: Called multilib-minimal_src_compile
* environment, line 2465: Called multilib_foreach_abi 'multilib-minimal_abi_src_compile'
* environment, line 2737: Called multibuild_foreach_variant '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile'
* environment, line 2425: Called _multibuild_run '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile'
* environment, line 2423: Called _multilib_multibuild_wrapper 'multilib-minimal_abi_src_compile'
* environment, line 600: Called multilib-minimal_abi_src_compile
* environment, line 2459: Called multilib_src_compile
* environment, line 2958: Called cmake_src_compile
* environment, line 1520: Called cmake_build
* environment, line 1430: Called eninja
* environment, line 1779: Called die
* The specific snippet of code:
* "$@" || die -n "${*} failed"
* If you need support, post the output of `emerge --info '=media-libs/vulkan-layers-1.4.350.0::gentoo'`,
* the complete build log and the output of `emerge -pqv '=media-libs/vulkan-layers-1.4.350.0::gentoo'`.
* The complete build log is located at '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/temp/environment'.
* Working directory: '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0_build-abi_x86_32.x86'
* S: '/var/tmp/portage/media-libs/vulkan-layers-1.4.350.0/work/Vulkan-ValidationLayers-vulkan-sdk-1.4.350.0'
```

## Attached Files

- gpuav_ray_tracing-3e0781.cpp is nearly 30MB big, so [I uploaded it as a gist](https://gist.github.com/minecrawler/c7c20609cd32a0f7140a47a93c4902ff)
- [gpuav_ray_tracing-3e0781.sh](https://github.com/user-attachments/files/29088335/gpuav_ray_tracing-3e0781.sh)

Start by running gpuav_ray_tracing-3e0781.sh with the supplied preprocessed source from the gist to reproduce the crash. Then inspect the stack locations in utils/cast_utils.h, especially lines 34 and 67, and confirm completion when Clang no longer exits with code 139 on this reproducer.

Written by the indexing model from the issue text.