crash

[unegare]

$ ./chapter02 ads
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GL Vendor    : Intel Open Source Technology Center
GL Renderer  : Mesa DRI Intel(R) UHD Graphics 630 (Coffeelake 3x8 GT2) 
GL Version   : 4.5 (Core Profile) Mesa 18.2.8
GL Version   : 4.5
GLSL Version : 4.50
-------------------------------------------------------------
App:Marker[NOTIFY](0): Start debugging
ShaderCompiler:Other[NOTIFY](5): FS SIMD8 shader: 5 inst, 0 loops, 24 cycles, 0:0 spills:fills, Promoted 0 constants, compacted 80 to 64 bytes.
ShaderCompiler:Other[NOTIFY](6): FS SIMD16 shader: 5 inst, 0 loops, 34 cycles, 0:0 spills:fills, Promoted 0 constants, compacted 80 to 64 bytes.
ShaderCompiler:Other[NOTIFY](7): VS SIMD8 shader: 102 inst, 0 loops, 505 cycles, 0:0 spills:fills, Promoted 0 constants, compacted 1632 to 1152 bytes.
Ошибка сегментирования (стек памяти сброшен на диск)

The last line tells that there was a segfault.