[Bug c/79027] New: fold-const.c:11104:1: internal compiler error: Floating point exception

danglin at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Mon Jan 9 01:49:00 GMT 2017 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79027

            Bug ID: 79027
           Summary: fold-const.c:11104:1: internal compiler error:
                    Floating point exception
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: danglin at gcc dot gnu.org
                CC: deller at gmx dot de
  Target Milestone: ---
              Host: hppa-unknown-linux-gnu
            Target: hppa-unknown-linux-gnu
             Build: hppa-unknown-linux-gnu

Created attachment 40479
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40479&action=edit
Preprocessed source

The build fails on trunk:

/home/dave/gnu/gcc/objdir/./prev-gcc/xg++
-B/home/dave/gnu/gcc/objdir/./prev-gcc
/ -B/home/dave/opt/gnu/gcc/gcc-7/hppa-linux-gnu/bin/ -nostdinc++
-B/home/dave/gn
u/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/src/.libs
-B/home/dave/gnu/gcc/obj
dir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.libs 
-I/home/dave/gnu/gcc/objdi
r/prev-hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu 
-I/home/dave/gnu/gcc/
objdir/prev-hppa-linux-gnu/libstdc++-v3/include 
-I/home/dave/gnu/gcc/gcc/libstd
c++-v3/libsupc++
-L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/sr
c/.libs
-L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.
libs -fno-PIE -c   -g -O2 -DIN_GCC     -fno-exceptions -fno-rtti
-fasynchronous-
unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wmissing-form
at-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros 
-Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I.
-I../../gcc
/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include
-I../../gcc/gcc/../libcpp/incl
ude  -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd
-I../li
bdecnumber -I../../gcc/gcc/../libbacktrace   -o fold-const.o -MT fold-const.o
-M
MD -MP -MF ./.deps/fold-const.TPo ../../gcc/gcc/fold-const.c
../../gcc/gcc/fold-const.c: In function ‘tree_node* fold_binary_loc(location_t, 
tree_code, tree, tree, tree)’:
../../gcc/gcc/fold-const.c:11104:1: internal compiler error: Floating point
exce
ption
 }
 ^
0x14fb0af crash_signal        ../../gcc/gcc/toplev.c:333

With "-v -save-temps", more errors appear:

dave@MACPRO:~$ cat xx.log
Reading specs from /home/dave/gnu/gcc/objdir/./prev-gcc/specs
COLLECT_GCC=/home/dave/gnu/gcc/objdir/./prev-gcc/xg++
Target: hppa-linux-gnu
Configured with: ../gcc/configure --with-gnu-as --with-gnu-ld --enable-shared
--enable-multiarch --enable-linker-build-id --build=hppa-linux-gnu
--host=hppa-linux-gnu --target=hppa-linux-gnu
--prefix=/home/dave/opt/gnu/gcc/gcc-7 --with-local-prefix=/home/dave/opt/gnu
--enable-threads=posix --enable-__cxa_atexit --build=hppa-linux-gnu
--enable-clocale=gnu --enable-languages=c,c++,objc,fortran,obj-c++,ada,lto,go
Thread model: posix
gcc version 7.0.0 20170108 (experimental) [trunk revision 244209] (GCC) 
COLLECT_GCC_OPTIONS='-B' '/home/dave/gnu/gcc/objdir/./prev-gcc/' '-B'
'/home/dave/opt/gnu/gcc/gcc-7/hppa-linux-gnu/bin/' '-nostdinc++' '-B'
'/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/src/.libs' '-B'
'/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.libs'
'-I'
'/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu'
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'-L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/src/.libs'
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'-I' '.' '-I' '../../gcc/gcc' '-I' '../../gcc/gcc/.' '-I'
'../../gcc/gcc/../include' '-I' '../../gcc/gcc/../libcpp/include' '-I'
'../../gcc/gcc/../libdecnumber' '-I' '../../gcc/gcc/../libdecnumber/dpd' '-I'
'../libdecnumber' '-I' '../../gcc/gcc/../libbacktrace' '-o' 'fold-const.o'
'-MT' 'fold-const.o' '-MMD' '-MP' '-MF' './.deps/fold-const.TPo' '-v'
'-save-temps' '-shared-libgcc'
 /home/dave/gnu/gcc/objdir/./prev-gcc/cc1plus -E -quiet -nostdinc++ -v -I
/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu
-I /home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include -I
/home/dave/gnu/gcc/gcc/libstdc++-v3/libsupc++ -I . -I . -I ../../gcc/gcc -I
../../gcc/gcc/. -I ../../gcc/gcc/../include -I ../../gcc/gcc/../libcpp/include
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hppa-linux-gnu -iprefix
/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/hppa-linux-gnu/7.0.0/ -isystem
/home/dave/gnu/gcc/objdir/./prev-gcc/include -isystem
/home/dave/gnu/gcc/objdir/./prev-gcc/include-fixed -MMD fold-const.d -MF
./.deps/fold-const.TPo -MP -MT fold-const.o -D_GNU_SOURCE -D IN_GCC -D
HAVE_CONFIG_H ../../gcc/gcc/fold-const.c -Wextra -Wall -Wno-narrowing
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-fno-PIE -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -fno-common -g
-fworking-directory -O2 -fpch-preprocess -o fold-const.ii
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/hppa-linux-gnu/7.0.0/include"
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/hppa-linux-gnu/7.0.0/include-fixed"
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/hppa-linux-gnu/7.0.0/../../../../hppa-linux-gnu/include"
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/../../lib/gcc/hppa-linux-gnu/7.0.0/include"
ignoring nonexistent directory "/home/dave/opt/gnu/include/hppa-linux-gnu"
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/../../include"
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/../../lib/gcc/hppa-linux-gnu/7.0.0/include-fixed"
ignoring nonexistent directory
"/home/dave/gnu/gcc/objdir/prev-gcc/../lib/gcc/../../lib/gcc/hppa-linux-gnu/7.0.0/../../../../hppa-linux-gnu/include"
ignoring duplicate directory "."
ignoring duplicate directory "../../gcc/gcc/."
#include "..." search starts here:
#include <...> search starts here:

/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu
 /home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include
 /home/dave/gnu/gcc/gcc/libstdc++-v3/libsupc++
 .
 ../../gcc/gcc
 ../../gcc/gcc/../include
 ../../gcc/gcc/../libcpp/include
 ../../gcc/gcc/../libdecnumber
 ../../gcc/gcc/../libdecnumber/dpd
 ../libdecnumber
 ../../gcc/gcc/../libbacktrace
 /home/dave/gnu/gcc/objdir/./prev-gcc/include
 /home/dave/gnu/gcc/objdir/./prev-gcc/include-fixed
 /home/dave/opt/gnu/include
 /usr/include/hppa-linux-gnu
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End of search list.
COLLECT_GCC_OPTIONS='-B' '/home/dave/gnu/gcc/objdir/./prev-gcc/' '-B'
'/home/dave/opt/gnu/gcc/gcc-7/hppa-linux-gnu/bin/' '-nostdinc++' '-B'
'/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/src/.libs' '-B'
'/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.libs'
'-I'
'/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include/hppa-linux-gnu'
'-I' '/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/include' '-I'
'/home/dave/gnu/gcc/gcc/libstdc++-v3/libsupc++'
'-L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/src/.libs'
'-L/home/dave/gnu/gcc/objdir/prev-hppa-linux-gnu/libstdc++-v3/libsupc++/.libs'
'-fno-PIE' '-c' '-g' '-O2' '-D' 'IN_GCC' '-fno-exceptions' '-fno-rtti'
'-fasynchronous-unwind-tables' '-Wextra' '-Wall' '-Wno-narrowing'
'-Wwrite-strings' '-Wcast-qual' '-Wsuggest-attribute=format'
'-Woverloaded-virtual' '-Wpedantic' '-Wno-long-long' '-Wno-variadic-macros'
'-Wno-overlength-strings' '-Werror' '-fno-common' '-D' 'HAVE_CONFIG_H' '-I' '.'
'-I' '.' '-I' '../../gcc/gcc' '-I' '../../gcc/gcc/.' '-I'
'../../gcc/gcc/../include' '-I' '../../gcc/gcc/../libcpp/include' '-I'
'../../gcc/gcc/../libdecnumber' '-I' '../../gcc/gcc/../libdecnumber/dpd' '-I'
'../libdecnumber' '-I' '../../gcc/gcc/../libbacktrace' '-o' 'fold-const.o'
'-MT' 'fold-const.o' '-MMD' '-MP' '-MF' './.deps/fold-const.TPo' '-v'
'-save-temps' '-shared-libgcc'
 /home/dave/gnu/gcc/objdir/./prev-gcc/cc1plus -fpreprocessed fold-const.ii
-quiet -dumpbase fold-const.c -auxbase-strip fold-const.o -g -O2 -Wextra -Wall
-Wno-narrowing -Wwrite-strings -Wcast-qual -Wsuggest-attribute=format
-Woverloaded-virtual -Wpedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -version -fno-PIE -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -fno-common -o fold-const.s
GNU C++14 (GCC) version 7.0.0 20170108 (experimental) [trunk revision 244209]
(hppa-linux-gnu)
        compiled by GNU C version 6.3.0 20161229, GMP version 6.1.2, MPFR
version 3.1.5, MPC version 1.0.3, isl version 0.15
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++14 (GCC) version 7.0.0 20170108 (experimental) [trunk revision 244209]
(hppa-linux-gnu)
        compiled by GNU C version 6.3.0 20161229, GMP version 6.1.2, MPFR
version 3.1.5, MPC version 1.0.3, isl version 0.15
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 469653bacf19a93854ee98d4788c69d2
../../gcc/gcc/fold-const.c: In function ‘tree_node* const_binop(tree_code,
tree, tree)’:
../../gcc/gcc/fold-const.c:1290:4: error: this statement may fall through
[-Werror=implicit-fallthrough=]
    if (COMPLEX_FLOAT_TYPE_P (type))
    ^~
../../gcc/gcc/fold-const.c:1295:2: note: here
  case TRUNC_DIV_EXPR:
  ^~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node*
fold_negate_expr(location_t, tree)’:
../../gcc/gcc/fold-const.c:630:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (TYPE_UNSIGNED (type))
       ^~
../../gcc/gcc/fold-const.c:635:5: note: here
     case RDIV_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘bool negate_expr_p(tree)’:
../../gcc/gcc/fold-const.c:454:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (INTEGRAL_TYPE_P (TREE_TYPE (t))
       ^~
../../gcc/gcc/fold-const.c:464:5: note: here
     case RDIV_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node*
fold_convert_loc(location_t, tree, tree)’:
../../gcc/gcc/fold-const.c:2217:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (POINTER_TYPE_P (orig)
       ^~
../../gcc/gcc/fold-const.c:2223:5: note: here
     case INTEGER_TYPE: case ENUMERAL_TYPE: case BOOLEAN_TYPE:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘int operand_equal_p(const_tree,
const_tree, unsigned int)’:
../../gcc/gcc/fold-const.c:3017:4: error: this statement may fall through
[-Werror=implicit-fallthrough=]
    if (!operand_equal_p (TYPE_SIZE (TREE_TYPE (arg0)),
    ^~
../../gcc/gcc/fold-const.c:3023:2: note: here
  case REALPART_EXPR:
  ^~~~
../../gcc/gcc/fold-const.c:3129:4: error: this statement may fall through
[-Werror=implicit-fallthrough=]
    if (!OP_SAME (2))
    ^~
../../gcc/gcc/fold-const.c:3134:2: note: here
  case TRUTH_AND_EXPR:
  ^~~~
../../gcc/gcc/fold-const.c:3017:4: error: this statement may fall through
[-Werror=implicit-fallthrough=]
    if (!operand_equal_p (TYPE_SIZE (TREE_TYPE (arg0)),
    ^~
../../gcc/gcc/fold-const.c:3023:2: note: here
  case REALPART_EXPR:
  ^~~~
../../gcc/gcc/fold-const.c:3129:4: error: this statement may fall through
[-Werror=implicit-fallthrough=]
    if (!OP_SAME (2))
    ^~
../../gcc/gcc/fold-const.c:3134:2: note: here
  case TRUTH_AND_EXPR:
  ^~~~
../../gcc/gcc/fold-const.c: In function ‘bool merge_ranges(int*, tree_node**,
tree_node**, int, tree, tree, int, tree, tree)’:
../../gcc/gcc/fold-const.c:4942:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (TYPE_PRECISION (TREE_TYPE (low0))
       ^~
../../gcc/gcc/fold-const.c:4946:5: note: here
     case INTEGER_TYPE:
     ^~~~
../../gcc/gcc/fold-const.c:4965:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (TYPE_PRECISION (TREE_TYPE (high1))
       ^~
../../gcc/gcc/fold-const.c:4969:5: note: here
     case INTEGER_TYPE:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node*
fold_truth_not_expr(location_t, tree)’:
../../gcc/gcc/fold-const.c:3686:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (TREE_CODE (TREE_TYPE (arg)) == BOOLEAN_TYPE)
       ^~
../../gcc/gcc/fold-const.c:3691:5: note: here
     case FLOAT_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node* fold_binary_loc(location_t,
tree_code, tree, tree, tree)’:
../../gcc/gcc/fold-const.c:10084:2: error: this statement may fall through
[-Werror=implicit-fallthrough=]
  }
  ^
../../gcc/gcc/fold-const.c:10088:5: note: here
     case ROUND_DIV_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c:10218:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (integer_zerop (arg0))
       ^~
../../gcc/gcc/fold-const.c:10221:5: note: here
     case TRUTH_AND_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c:10274:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (TREE_CODE (arg0) == INTEGER_CST && ! integer_zerop (arg0))
       ^~
../../gcc/gcc/fold-const.c:10277:5: note: here
     case TRUTH_OR_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node* extract_muldiv_1(tree,
tree, tree_code, tree, bool*)’:
../../gcc/gcc/fold-const.c:6005:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (tree_int_cst_sgn (c) == -1)
       ^~
../../gcc/gcc/fold-const.c:6008:5: note: here
     case NEGATE_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node*
contains_label_1(tree_node**, int*, void*)’:
../../gcc/gcc/fold-const.c:11119:22: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       *walk_subtrees = 0;
       ~~~~~~~~~~~~~~~^~~
../../gcc/gcc/fold-const.c:11123:5: note: here
     default:
     ^~~~~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node*
fold_cond_expr_with_comparison(location_t, tree, tree, tree, tree)’:
../../gcc/gcc/fold-const.c:5079:2: error: this statement may fall through
[-Werror=implicit-fallthrough=]
  if (flag_trapping_math)
  ^~
../../gcc/gcc/fold-const.c:5082:7: note: here
       case GE_EXPR:
       ^~~~
../../gcc/gcc/fold-const.c:5090:2: error: this statement may fall through
[-Werror=implicit-fallthrough=]
  if (flag_trapping_math)
  ^~
../../gcc/gcc/fold-const.c:5093:7: note: here
       case LE_EXPR:
       ^~~~
../../gcc/gcc/fold-const.c: In function ‘int multiple_of_p(tree, const_tree,
const_tree)’:
../../gcc/gcc/fold-const.c:12451:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if (!integer_pow2p (bottom))
       ^~
../../gcc/gcc/fold-const.c:12455:5: note: here
     case MULT_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c:12496:7: error: this statement may fall through
[-Werror=implicit-fallthrough=]
       if ((TREE_CODE (TREE_TYPE (TREE_OPERAND (top, 0))) != INTEGER_TYPE)
       ^~
../../gcc/gcc/fold-const.c:12503:5: note: here
     case SAVE_EXPR:
     ^~~~
../../gcc/gcc/fold-const.c:12554:2: error: this statement may fall through
[-Werror=implicit-fallthrough=]
  }
  ^
../../gcc/gcc/fold-const.c:12558:5: note: here
     default:
     ^~~~~~~
../../gcc/gcc/fold-const.c: In function ‘tree_node* fold_binary_loc(location_t,
tree_code, tree, tree, tree)’:
../../gcc/gcc/fold-const.c:11104:1: internal compiler error: Floating point
exception
 }
 ^
0x14fb0af crash_signal
        ../../gcc/gcc/toplev.c:333
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

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