[Bug c/79478] New: possible gimple error with gcc.dg/gimplefe-16.c

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79478

            Bug ID: 79478
           Summary: possible gimple error with gcc.dg/gimplefe-16.c
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

I just tried out gcc/testsuite/gcc.dg/gimplefe-16.c with
a valgrind version of gcc trunk. It said:

$ ~/gcc/results.245356/bin/gcc -c -fgimple gcc.dg/gimplefe-16.c
==16161== Conditional jump or move depends on uninitialised value(s)
==16161==    at 0x11233E8: can_be_stored_compactly_p (line-map.c:144)
==16161==    by 0x11233E8: get_combined_adhoc_loc(line_maps*, unsigned int,
sour
ce_range, void*) (line-map.c:186)
==16161==    by 0xC7323F: COMBINE_LOCATION_DATA (line-map.h:1020)
==16161==    by 0xC7323F: set_source_range(tree_node*, source_range)
(tree.c:142
98)