Bug#758903: clang-3.5: assembler segfaults on .org - 1

[Daniele Forsi]

Package: clang-3.5
Version: 1:3.5~+rc1-2
Severity: normal

I reduced the test case to a single line:
	.org . - 1

This is the stack trace of the segfault:

0  libLLVM-3.5.so.1 0xb63204c7 llvm::sys::PrintStackTrace(_IO_FILE*) + 39
1  libLLVM-3.5.so.1 0xb63206dc
2  libLLVM-3.5.so.1 0xb631ff34
3  linux-gate.so.1  0xb7794400 __kernel_sigreturn + 0
4  libc.so.6        0xb545c807
5  libLLVM-3.5.so.1 0xb5aacd3b llvm::MCObjectStreamer::EmitFill(unsigned long long, unsigned char) + 107
6  libLLVM-3.5.so.1 0xb5aab4eb llvm::MCObjectStreamer::EmitValueToOffset(llvm::MCExpr const*, unsigned char) + 299
7  libLLVM-3.5.so.1 0xb5d347d2
8  libLLVM-3.5.so.1 0xb5d34b20
9  clang            0x082b15c1 cc1as_main(char const**, char const**, char const*, void*) + 5633
10 clang            0x082ad497 main + 9463
11 libc.so.6        0xb53f9a63 __libc_start_main + 243
12 clang            0x082ad4c6
Stack dump:
0.	Program arguments: /usr/lib/llvm-3.5/bin/clang -cc1as -triple i386-pc-linux-gnu -filetype obj -main-file-name segfault.S -target-cpu pentium4 -fdebug-compilation-dir /home/daniele/Programmazione/vetusboot-cmake -dwarf-debug-producer Debian clang version 3.5.0-+rc1-2 (tags/RELEASE_35/rc1) (based on LLVM 3.5.0) -o /tmp/segfault-cd209e.o /tmp/segfault-82c151.s 
1.	Program arguments: -triple i386-pc-linux-gnu -filetype obj -main-file-name segfault.S -target-cpu pentium4 -fdebug-compilation-dir /home/daniele/Programmazione/vetusboot-cmake -dwarf-debug-producer Debian clang version 3.5.0-+rc1-2 (tags/RELEASE_35/rc1) (based on LLVM 3.5.0) -o /tmp/segfault-cd209e.o /tmp/segfault-82c151.s 
0  libLLVM-3.5.so.1 0xb63204c7 llvm::sys::PrintStackTrace(_IO_FILE*) + 39
1  libLLVM-3.5.so.1 0xb63206dc
2  libLLVM-3.5.so.1 0xb631ff34
3  linux-gate.so.1  0xb7794400 __kernel_sigreturn + 0
4  libc.so.6        0xb545c807
5  libLLVM-3.5.so.1 0xb5aacd3b llvm::MCObjectStreamer::EmitFill(unsigned long long, unsigned char) + 107
6  libLLVM-3.5.so.1 0xb5aab4eb llvm::MCObjectStreamer::EmitValueToOffset(llvm::MCExpr const*, unsigned char) + 299
7  libLLVM-3.5.so.1 0xb5d347d2
8  libLLVM-3.5.so.1 0xb5d34b20
9  clang            0x082b15c1 cc1as_main(char const**, char const**, char const*, void*) + 5633
10 clang            0x082ad497 main + 9463
11 libc.so.6        0xb53f9a63 __libc_start_main + 243
12 clang            0x082ad4c6
clang: error: unable to execute command: Segmentation fault
clang: error: clang integrated assembler command failed due to signal (use -v to see invocation)
Debian clang version 3.5.0-+rc1-2 (tags/RELEASE_35/rc1) (based on LLVM 3.5.0)
Target: i386-pc-linux-gnu
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to http://bugs.debian.org/ and include the crash backtrace, preprocessed source, and associated run script.
clang: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/segfault-730e40.S
clang: note: diagnostic msg: /tmp/segfault-730e40.sh
clang: note: diagnostic msg: 

********************

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.14-2-686-pae (SMP w/2 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages clang-3.5 depends on:
ii  libc6                    2.19-9
ii  libc6-dev                2.19-9
ii  libclang-common-3.5-dev  1:3.5~+rc1-2
ii  libclang1-3.5            1:3.5~+rc1-2
ii  libedit2                 3.1-20140620-2
ii  libffi6                  3.1-2
ii  libgcc-4.9-dev           4.9.1-4
ii  libgcc1                  1:4.9.1-4
ii  libllvm3.5               1:3.5~+rc1-2
ii  libobjc-4.9-dev          4.9.1-4
ii  libstdc++-4.9-dev        4.9.1-4
ii  libstdc++6               4.9.1-4
ii  libtinfo5                5.9+20140712-2

Versions of packages clang-3.5 recommends:
ii  llvm-3.5-dev  1:3.5~+rc1-2
ii  python        2.7.8-1

Versions of packages clang-3.5 suggests:
pn  clang-3.5-doc  <none>
pn  gnustep        <none>
pn  gnustep-devel  <none>

-- no debconf information
-------------- next part --------------
# 1 "<built-in>"
# 1 "segfault.S"
	.org . - 1
-------------- next part --------------
 "/usr/lib/llvm-3.5/bin/clang" -cc1as -triple i386-pc-linux-gnu -filetype obj -main-file-name segfault-730e40.S -target-cpu pentium4 -dwarf-debug-producer Debian clang version 3.5.0-+rc1-2 (tags/RELEASE_35/rc1) (based on LLVM 3.5.0) /tmp/segfault-82c151.s