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[Bug c/67271] New: ICE with -O1,2,3 on darwin14.5 x86_64


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67271

            Bug ID: 67271
           Summary: ICE with -O1,2,3 on darwin14.5 x86_64
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tarasevich at cs dot uni-saarland.de
  Target Milestone: ---

Created attachment 36212
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36212&action=edit
preprocessed test case

Although test case has out of bounds read, it still yield ICE.

GCC was compiled from SVN trunk revision 226781

gcc -v -save-temps -O1 test_case_38.c 
Using built-in specs.
COLLECT_GCC=/Users/sevich/work/build_normal/bin/gcc
COLLECT_LTO_WRAPPER=/Users/sevich/work/build_normal/libexec/gcc/x86_64-apple-darwin14.5.0/6.0.0/lto-wrapper
Target: x86_64-apple-darwin14.5.0
Configured with: /Users/sevich/work/source/gcc_trunk_git/configure
--disable-bootstrap --enable-languages=c,c++
--prefix=/Users/sevich/work/build_normal/
Thread model: posix
gcc version 6.0.0 20150811 (experimental) (GCC) 
COLLECT_GCC_OPTIONS='-mmacosx-version-min=10.10.5' '-v' '-save-temps' '-O1'
'-mtune=core2'

/Users/sevich/work/build_normal/libexec/gcc/x86_64-apple-darwin14.5.0/6.0.0/cc1
-E -quiet -v -D__DYNAMIC__ test_case_38.c -fPIC -mmacosx-version-min=10.10.5
-mtune=core2 -O1 -fpch-preprocess -o test_case_38.i
ignoring nonexistent directory
"/Users/sevich/work/build_normal/lib/gcc/x86_64-apple-darwin14.5.0/6.0.0/../../../../x86_64-apple-darwin14.5.0/include"
#include "..." search starts here:
#include <...> search starts here:

/Users/sevich/work/build_normal/lib/gcc/x86_64-apple-darwin14.5.0/6.0.0/include
 /usr/local/include
 /Users/sevich/work/build_normal/include

/Users/sevich/work/build_normal/lib/gcc/x86_64-apple-darwin14.5.0/6.0.0/include-fixed
 /usr/include
 /System/Library/Frameworks
 /Library/Frameworks
End of search list.
COLLECT_GCC_OPTIONS='-mmacosx-version-min=10.10.5' '-v' '-save-temps' '-O1'
'-mtune=core2'

/Users/sevich/work/build_normal/libexec/gcc/x86_64-apple-darwin14.5.0/6.0.0/cc1
-fpreprocessed test_case_38.i -fPIC -quiet -dumpbase test_case_38.c
-mmacosx-version-min=10.10.5 -mtune=core2 -auxbase test_case_38 -O1 -version -o
test_case_38.s
GNU C11 (GCC) version 6.0.0 20150811 (experimental) (x86_64-apple-darwin14.5.0)
        compiled by GNU C version 4.2.1 Compatible Apple LLVM 6.1.0
(clang-602.0.53), GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C11 (GCC) version 6.0.0 20150811 (experimental) (x86_64-apple-darwin14.5.0)
        compiled by GNU C version 4.2.1 Compatible Apple LLVM 6.1.0
(clang-602.0.53), GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 700dea0ce5ef3b798edb9c9160a43b26
test_case_38.c: In function âmainâ:
test_case_38.c:5:15: warning: initialization from incompatible pointer type
[-Wincompatible-pointer-types]
     long *a = "empty";
               ^
test_case_38.c:7:12: warning: implicit declaration of function âlabsâ
[-Wimplicit-function-declaration]
     a[i] = labs(a[i]);
            ^
test_case_38.c:7:12: warning: incompatible implicit declaration of built-in
function âlabsâ
test_case_38.c:7:12: note: include â<stdlib.h>â or provide a declaration of
âlabsâ
test_case_38.c:9:1: internal compiler error: Segmentation fault: 11
 }
 ^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

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