[Bug debug/59418] New: ICE in maybe_record_trace_start, at dwarf2cfi.c:2221

[rmansfield at qnx dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59418

            Bug ID: 59418
           Summary: ICE in maybe_record_trace_start, at dwarf2cfi.c:2221
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rmansfield at qnx dot com
            Target: arm-unknown-linux-gnueabi

$ ./xgcc -v
Using built-in specs.
COLLECT_GCC=./xgcc
Target: arm-unknown-linux-gnueabi
Configured with: ../configure --target=arm-unknown-linux-gnueabi
--prefix=/home/ryan/x-tools/arm-unknown-linux-gnueabi
--with-sysroot=/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi//sys-root
--disable-multilib
--with-local-prefix=/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sys-root
--disable-nls --enable-threads=posix --enable-symvers=gnu --enable-c99
--enable-long-long --enable-target-optspace
target_alias=arm-unknown-linux-gnueabi --enable-languages=c++ --disable-shared
--disable-libmudflap --disable-libssp --enable-checking
Thread model: posix
gcc version 4.9.0 20131207 (experimental) [trunk revision 205782] (GCC) 

$ cat ~/ice1.i
extern int printf (const char *__format, ...);

void
foo (const char *pptr, int caplen)
{
  int type;
  const char *tptr;
  if (caplen < 4)
    {
      (void) printf ("foo");
      return;
    }
  while (tptr < pptr)
    {
      switch (type)
    {
    case 0x01:
      printf ("");
    case 0x0b:
      printf ("");
    case 0x0e:
      printf ("");
    case 0x10:
      printf ("%1.2fW", bar (tptr, caplen) / 1000.0);
    }
    }
  printf ("foo");
}

$ ./xgcc -B. ~/ice1.i -Os -g -march=armv7-a -mfloat-abi=softfp
/home/ryan/ice1.i: In function 'foo':
/home/ryan/ice1.i:28:1: internal compiler error: in maybe_record_trace_start,
at dwarf2cfi.c:2221
 }
 ^
0x68035f maybe_record_trace_start
    ../../gcc/dwarf2cfi.c:2221
0x680619 create_trace_edges
    ../../gcc/dwarf2cfi.c:2313
0x6806fc scan_trace
    ../../gcc/dwarf2cfi.c:2526
0x68129e create_cfi_notes
    ../../gcc/dwarf2cfi.c:2552
0x68129e execute_dwarf2_frame
    ../../gcc/dwarf2cfi.c:2907
0x68129e execute
    ../../gcc/dwarf2cfi.c:3403
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.