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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang-cpp incorrectly trims whitespace after include (breaking all indent sensitive languages)."
href="https://bugs.llvm.org/show_bug.cgi?id=34552">34552</a>
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<th>Summary</th>
<td>clang-cpp incorrectly trims whitespace after include (breaking all indent sensitive languages).
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>5.0
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>release blocker
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>pantelis.antoniou@konsulko.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>clang-cpp incorrectly trims whitespace after an include, which results in
brokeness in all environments that are indentation sensitive: YAML is such an
environment.
GCC's CPP behaves correctly.
--- x1.yaml ---
test:
#include "x2.yaml"
bar:
---
--- x2.yaml ---
sub: true
---
GCC's cpp command line and output:
$ cpp -nostdinc -I. -x assembler-with-cpp x1.yaml >x1.cpp-gcc.yaml
--- x1.cpp-gcc.yaml ---
# 1 "x1.yaml"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "x1.yaml"
test:
# 1 "x2.yaml" 1
sub: true
# 3 "x1.yaml" 2
bar:
---
Note that 'sub: true' is correctly indented.
Clang's cpp command line and output:
$ clang-cpp-5.0 -nostdinc -I. -x assembler-with-cpp x1.yaml >x1.cpp-clang.yaml
--- x1.cpp-clang.yaml ---
# 1 "x1.yaml"
# 1 "<built-in>" 1
# 1 "x1.yaml" 2
test:
# 1 "./x2.yaml" 1
sub: true
# 3 "x1.yaml" 2
bar:
---
Note that 'bar' is incorrectly shifted left by one space (which completely
breaks YAML formatting).
There is extra white-space after 'test:' but that doesn't cause any problems.</pre>
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