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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Wrong line numbers expanded while compiling shaders"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106590">106590</a>
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<th>Summary</th>
<td>Wrong line numbers expanded while compiling shaders
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>17.1
</td>
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<th>Hardware</th>
<td>ARM
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>glsl-compiler
</td>
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>zhaowei.yuan@samsung.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=139657" name="attach_139657" title="patch that fix GLSL compiling issue">attachment 139657</a> <a href="attachment.cgi?id=139657&action=edit" title="patch that fix GLSL compiling issue">[details]</a></span>
patch that fix GLSL compiling issue
Following shader code is got from a CTS test case which is intend to check if
the shader compiler can expand macro with right line number:
1 #version 300 es
2 precision mediump float;
3 #define BBB __LINE__, /*
4 */ __LINE__
5 #define AAA(a,b) BBB, a, b
6
7 void main()
8 {
9 out0 = vec4(AAA(__LINE__,
10 __LINE__
11 ));
12 }
It expects to make out0 filled with (11, 11, 9, 10) values, But mesa gives
(3,4, 9, 10).
There are 2 problems:
1. Macro BBB should be expanded as the line number exactly where it is
referenced, not declared
2. Macro BBB have a character '\n' within "/**/" which should be ignored and
treat 2 "__LINE__" as the in the same line
I fixed this problem with the attached patch, please review, thanks</pre>
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