[Bug middle-end/77683] New: ICE on %lf directive in format_floating in /src/gcc-svn/gcc/gimple-ssa-sprintf.c:1163

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77683

            Bug ID: 77683
           Summary: ICE on %lf directive in format_floating in
                    /src/gcc-svn/gcc/gimple-ssa-sprintf.c:1163
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: msebor at gcc dot gnu.org
  Target Milestone: ---

The gimple-ssa-sprintf.c pass crashes on a %lf directive:

$ cat v.c && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -S -Wall
-Wformat -Wextra -Wpedantic v.c
char d [3];

void f (double x)
{
  __builtin_sprintf (d, "%lf", x);
}
v.c: In function ‘f’:
v.c:3:6: internal compiler error: in format_floating, at
gimple-ssa-sprintf.c:1163
 void f (double x)
      ^
0x181ba7e format_floating
        /src/gcc-svn/gcc/gimple-ssa-sprintf.c:1163
0x181c8b2 format_floating
        /src/gcc-svn/gcc/gimple-ssa-sprintf.c:1373
0x181d144 format_directive
        /src/gcc-svn/gcc/gimple-ssa-sprintf.c:1626
0x181e794 compute_format_length
        /src/gcc-svn/gcc/gimple-ssa-sprintf.c:2320
0x181f516 handle_gimple_call
        /src/gcc-svn/gcc/gimple-ssa-sprintf.c:2645
0x181f5f1 execute
        /src/gcc-svn/gcc/gimple-ssa-sprintf.c:2671
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