[Bug c/70199] New: Crash at -O2 when using labels.

sce196 at icloud dot com gcc-bugzilla@gcc.gnu.org
Fri Mar 11 20:42:00 GMT 2016


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70199

            Bug ID: 70199
           Summary: Crash at -O2 when using labels.
           Product: gcc
           Version: 5.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sce196 at icloud dot com
  Target Milestone: ---

Created attachment 37944
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37944&action=edit
Preprocessed reproducer source code.

A crash occurs when compiling the attached (already preprocessed) code at -O2
or higher (no crash at -O1/-O0):

$ gcc -O2 b.i -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/5/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 5.3.1-8'
--with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-libquadmath --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-arm64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-arm64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-arm64
--with-arch-directory=aarch64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-multiarch --enable-fix-cortex-a53-843419 --enable-checking=release
--build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu
Thread model: posix
gcc version 5.3.1 20160205 (Debian 5.3.1-8) 
COLLECT_GCC_OPTIONS='-O2' '-v' '-mlittle-endian' '-mabi=lp64'
 /usr/lib/gcc/aarch64-linux-gnu/5/cc1 -fpreprocessed b.i -quiet -dumpbase b.i
-mlittle-endian -mabi=lp64 -auxbase b -O2 -version -o /tmp/ccwrrZPj.s
GNU C11 (Debian 5.3.1-8) version 5.3.1 20160205 (aarch64-linux-gnu)
        compiled by GNU C version 5.3.1 20160205, GMP version 6.1.0, MPFR
version 3.1.3-p5, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C11 (Debian 5.3.1-8) version 5.3.1 20160205 (aarch64-linux-gnu)
        compiled by GNU C version 5.3.1 20160205, GMP version 6.1.0, MPFR
version 3.1.3-p5, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: d706fe477e183894c53893e591b1fa46
*** Error in `/usr/lib/gcc/aarch64-linux-gnu/5/cc1': double free or corruption
(out): 0x00000000278bf770 ***
b.c: In function ‘benchmark.constprop’:
b.c:23:1: internal compiler error: Aborted
 }
 ^
0x950047 crash_signal
        ../../src/gcc/toplev.c:383
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.


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