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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - SIGSEGV glcpp/glcpp-parse.y:1077"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91290">91290</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>SIGSEGV glcpp/glcpp-parse.y:1077
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>have-backtrace
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Mesa core
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>vlee@freedesktop.org
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>mesa: f12302b89836a24255674a251f7a6902b4e9af7c (master 10.7.0-devel)
This minimum shader triggers a null pointer dereference in the GLSL compiler.
<frag>
#define A 1 /* comment */
#define A 1 /* comment */
</frag>
(gdb) bt
#0 _token_list_equal_ignoring_space (b=<optimized out>, a=<optimized out>) at
glcpp/glcpp-parse.y:1077
#1 _macro_equal (a=0x20863a0, b=0x2086080) at glcpp/glcpp-parse.y:2112
#2 0x0000000000498117 in _define_object_macro (parser=parser@entry=0x2082110,
loc=loc@entry=0x7ffe7e7b0414, identifier=0x2086150 "A",
replacements=0x2086240) at glcpp/glcpp-parse.y:2141
#3 0x000000000049b966 in glcpp_parser_parse (parser=parser@entry=0x2082110) at
glcpp/glcpp-parse.y:254
#4 0x00000000004637f2 in glcpp_preprocess (ralloc_ctx=0x2081790,
shader=0x7ffe7e7b14b0, info_log=0x20819b0,
extensions=<optimized out>, gl_ctx=<optimized out>) at glcpp/pp.c:226
#5 0x0000000000428ef4 in _mesa_glsl_compile_shader (ctx=0x7ffe7e7b1540,
shader=0x2080b70, dump_ast=<optimized out>,
dump_hir=<optimized out>) at glsl_parser_extras.cpp:1504
#6 0x0000000000406345 in compile_shader (ctx=0x7ffe7e7b1540, shader=0x2080b70)
at main.cpp:293
#7 0x000000000040437f in main (argc=2, argv=0x7ffe7e7d4528) at main.cpp:392
(gdb) frame 0
#0 _token_list_equal_ignoring_space (b=<optimized out>, a=<optimized out>) at
glcpp/glcpp-parse.y:1077
1077 while (node_a->token->type == SPACE)
(gdb) print node_a
$2 = (token_node_t *) 0x0</pre>
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