[Bug target/78603] New: internal compiler error: in dwarf2out_var_location, at dwarf2out.c:21846

[jcmvbkbc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78603

            Bug ID: 78603
           Summary: internal compiler error: in dwarf2out_var_location, at
                    dwarf2out.c:21846
           Product: gcc
           Version: 5.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jcmvbkbc at gcc dot gnu.org
  Target Milestone: ---

Created attachment 40192
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40192&action=edit
preprocessed source that triggers ICE

gcc-5.4.0 with the attached patch (backport from r226828):

xtensa-buildroot-linux-uclibc-gcc -c -Wall -DPJ_AUTOCONF=1 -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mlongcalls -mauto-litpools -Os
-g2 -DPJ_HAS_IPV6=1 -DPJ_IS_BIG_ENDIAN=1 -DPJ_IS_LITTLE_ENDIAN=0 -fPIC
-I/home/jcmvbkbc/ws/tensilica/buildroot/build-20161129-reproduce-libpjsip/host/usr/xtensa-buildroot-linux-uclibc/sysroot/usr/include
-I../include -o output/pjlib-test-xtensa-buildroot-linux-uclibc/thread.o
../src/pjlib-test/thread.c
../src/pjlib-test/thread.c: In function 'thread_test':
../src/pjlib-test/thread.c:328:1: internal compiler error: in
dwarf2out_var_location, at dwarf2out.c:21846
 }
 ^