mesa: 0a00a9a05b357dafae86bf8af879aa601f101eba (master)

piglit 17000-consecutive-chars-identifier crashes with swrast, softpipe, and llvmpipe.

$ ./bin/glslparsertest tests/glslparsertest/glsl2/17000-consecutive-chars-identifier.frag pass 1.10
Segmentation fault (core dumped)

(gdb) bt
#0  malloc_consolidate (av=0x7f50c7119e40) at malloc.c:5155
#1  0x00007f50c6e15e82 in _int_malloc (av=0x7f50c7119e40, bytes=17049) at malloc.c:4373
#2  0x00007f50c6e19254 in __libc_calloc (n=<value optimized out>, elem_size=<value optimized out>) at malloc.c:4065
#3  0x00007f50c7d7fd30 in ralloc_size (ctx=0x217abd0, size=17001) at ralloc.c:111
#4  0x00007f50c7d7ff94 in ralloc_array_size (ctx=0x217abd0, size=1, count=17001) at ralloc.c:179
#5  0x00007f50c7d80306 in ralloc_strdup (ctx=0x217abd0, str=0x218008f 'x' <repeats 200 times>...) at ralloc.c:313
#6  0x00007f50c7ea4d29 in glcpp_lex (yylval_param=0x7fff863ac750, yylloc_param=0x7fff863ac680, yyscanner=0x217ac40) at glcpp/glcpp-lex.l:276
#7  0x00007f50c7eabbf3 in glcpp_parser_lex (yylval=0x7fff863ac750, yylloc=0x7fff863ac680, parser=0x217abd0) at glcpp/glcpp-parse.y:1751
#8  0x00007f50c7ea7f34 in yyparse (parser=0x217abd0) at glcpp/glcpp-parse.c:1717
#9  0x00007f50c7eaac4b in glcpp_parser_parse (parser=0x217abd0) at glcpp/glcpp-parse.y:1150
#10 0x00007f50c7d80e93 in preprocess (ralloc_ctx=0x217a810, shader=0x7fff863ac8b0, info_log=0x217a8c8, extensions=0x20ac5b0, api=0) at glcpp/pp.c:152
#11 0x00007f50c7d6b43e in _mesa_glsl_compile_shader (ctx=0x20ab3b0, shader=0x2129ac0) at program/ir_to_mesa.cpp:3333
#12 0x00007f50c7d019c0 in compile_shader (ctx=0x20ab3b0, shaderObj=1) at main/shaderapi.c:848
#13 0x00007f50c7d02451 in _mesa_CompileShaderARB (shaderObj=1) at main/shaderapi.c:1188
#14 0x0000000000426dcd in test () at piglit/tests/glslparsertest/glslparsertest.c:141
#15 0x000000000042721e in main (argc=4, argv=0x7fff863acb58) at piglit/tests/glslparsertest/glslparsertest.c:267