segmentation fault under Haiku

Getting segmentation faults from glslangValidator on Haiku while compiling the latest Mesa.

```
/Data/Code/mesa> gdb /Data/Code/glslang/build/StandAlone/glslangValidator
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Reading symbols from /Data/Code/glslang/build/StandAlone/glslangValidator...
(gdb) run -V --target-env spirv1.5 -x -o src/vulkan/runtime/radix_sort/shaders/init.comp.spv.h src/vulkan/runtime/radix_sort/shaders/init.comp -DRS_KEYVAL_DWORDS=2

Starting program: /Data/Code/glslang/build/StandAlone/glslangValidator -V --target-env spirv1.5 -x -o src/vulkan/runtime/radix_sort/shaders/init.comp.spv.h src/vulkan/runtime/radix_sort/shaders/init.comp -DRS_KEYVAL_DWORDS=2
setpgrp failed in child: No such process
src/vulkan/runtime/radix_sort/shaders/init.comp
Thread 57449 caused an exception: Segment violation

Program received signal SIGSEGV, Segmentation fault.
0x0000000000789cb6 in std::basic_string, glslang::pool_allocator >::size (this=0x5252398)
at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/cow_string.h:922
922 return _M_rep()->_M_length;
(gdb) bt
#0 0x0000000000789cb6 in std::basic_string, glslang::pool_allocator >::size (this=0x5252398)
at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/cow_string.h:922
#1 0x000000000078a538 in std::operator==, glslang::pool_allocator > (__lhs=..., __rhs=...)
at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/basic_string.h:3714
#2 0x0000000000895038 in operator() (__closure=0x7f0001083a48, i=...) at /Data/Code/glslang/glslang/MachineIndependent/SymbolTable.cpp:304
#3 0x00000000008966f2 in __gnu_cxx::__ops::_Iter_pred, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >&)> >::operator()<__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > > >(__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >) (
this=0x7f0001083a48, __it=...) at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/predefined_ops.h:318
#4 0x00000000008964a2 in std::__find_if<__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__ops::_Iter_pred, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >&)> > >(__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__ops::_Iter_pred, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >&)> >, std::random_access_iterator_tag) (__first=..., __last=..., __pred=...)
at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/stl_algobase.h:2097
#5 0x00000000008962aa in std::__find_if<__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__ops::_Iter_pred, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >&)> > >(__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__ops::_Iter_pred, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >&)> >) (__first=..., __last=..., __pred=...)
at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/stl_algobase.h:2117
#6 0x0000000000896214 in std::find_if<__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string for more, q to quit, c to continue without paging--
char_traits, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, glslang::TSymbolTableLevel::~TSymbolTableLevel()::, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >&)> >(__gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, __gnu_cxx::__normal_iterator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >*, std::vector, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > >, glslang::pool_allocator, glslang::pool_allocator >, std::basic_string, glslang::pool_allocator > > > > >, struct {...}) (__first=..., __last=..., __pred=...) at /boot/system/develop/tools/lib/gcc/x86_64-unknown-haiku/13.3.0/include/c++/bits/stl_algo.h:3923
#7 0x00000000008950a3 in glslang::TSymbolTableLevel::~TSymbolTableLevel (this=0x5252298, __in_chrg=) at /Data/Code/glslang/glslang/MachineIndependent/SymbolTable.cpp:303
#8 0x000000000078949a in glslang::TSymbolTable::pop (this=0x169b5a0, p=0x0) at /Data/Code/glslang/glslang/MachineIndependent/SymbolTable.h:703
#9 0x000000000087d543 in glslang::TSymbolTable::~TSymbolTable (this=0x169b5a0, __in_chrg=) at /Data/Code/glslang/glslang/MachineIndependent/SymbolTable.h:638
#10 0x0000000000876d97 in ShFinalize () at /Data/Code/glslang/glslang/MachineIndependent/ShaderLang.cpp:1405
#11 0x0000000000877950 in glslang::FinalizeProcess () at /Data/Code/glslang/glslang/MachineIndependent/ShaderLang.cpp:1726
#12 0x0000000000630b07 in ?? ()
#13 0x0000000000122f80 in ?? ()
#14 0x0000000000651de0 in ?? ()
#15 0x000000000169c068 in ?? ()
#16 0x000000000169b018 in ?? ()
#17 0x00007f0001083be8 in ?? ()
#18 0x00007f0001083c20 in ?? ()
#19 0x00007f0001083be8 in ?? ()
#20 0x00007f0001083be8 in ?? ()
#21 0x00007f0001083bf4 in ?? ()
#22 0x00007f0001083be8 in ?? ()
#23 0x00007f0001083c60 in ?? ()
#24 0x0000000000000000 in ?? ()
(gdb)

/Data/Code/mesa> /Data/Code/glslang/build/StandAlone/glslangValidator --version
Glslang Version: 11:16.0.0
ESSL Version: OpenGL ES GLSL 3.20 glslang Khronos. 16.0.0
GLSL Version: 4.60 glslang Khronos. 16.0.0
SPIR-V Version 0x00010600, Revision 1
GLSL.std.450 Version 100, Revision 1
Khronos Tool ID 8
SPIR-V Generator Version 11
GL_KHR_vulkan_glsl version 100
ARB_GL_gl_spirv version 100
```

Reproduce the failure on Haiku with the glslangValidator command shown in the issue, then start at glslang/MachineIndependent/SymbolTable.cpp:303 and the related definitions in SymbolTable.h. Use the supplied backtrace to investigate the crash during symbol-table cleanup; done means the command completes without a segmentation fault.

Written by the indexing model from the issue text.