./configure --help failes with exception

[Alexander Basov]

(gdb) start
Temporary breakpoint 1 at 0x423d4c: file /mnt/work/programming/projects/matreshka/tools/configure/configure-driver.adb, line 62.
Starting program: /mnt/work/programming/projects/matreshka/configure --help
b ex
Temporary breakpoint 1, configure.driver () at /mnt/work/programming/projects/matreshka/tools/configure/configure-driver.adb:62
warning: Source file is more recent than executable.
62         Configure.Directories;
(gdb) b exception
Catchpoint 2: all Ada exceptions
(gdb) c
Continuing.

Catchpoint 2, GNAT.EXPECT.PROCESS_DIED at 0x000000000040ff7f in configure.builder.build (directory=...)
    at /mnt/work/programming/projects/matreshka/tools/configure/configure-builder.adb:73
73                    Get_Command_Output
(gdb) bt
#0  <__gnat_debug_raise_exception> (e=0x691500) at s-except.adb:43
#1  0x000000000042f6bf in <__gnat_raise_nodefer_with_msg> (e=0x691500) at a-except.adb:833
#2  0x000000000042f720 in <__gnat_raise_exception> (e=0x691500, message=...) at a-except.adb:873
#3  0x0000000000446339 in gnat.expect.expect ()
#4  0x00000000004465d7 in gnat.expect.expect ()
#5  0x0000000000446689 in gnat.expect.expect ()
#6  0x0000000000447cf7 in gnat.expect.get_command_output ()
#7  0x000000000040ff7f in configure.builder.build (directory=...) at /mnt/work/programming/projects/matreshka/tools/configure/configure-builder.adb:73
#8  0x000000000041151c in configure.architecture.detect_gcc () at /mnt/work/programming/projects/matreshka/tools/configure/configure-architecture.adb:110
#9  0x00000000004119af in configure.architecture () at /mnt/work/programming/projects/matreshka/tools/configure/configure-architecture.adb:148
#10 0x0000000000423d56 in configure.driver () at /mnt/work/programming/projects/matreshka/tools/configure/configure-driver.adb:63