[Bug binutils/21096] New: gcc7 warnings

[dilyan.palauzov at aegee dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=21096

            Bug ID: 21096
           Summary: gcc7 warnings
           Product: binutils
           Version: 2.29 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: dilyan.palauzov at aegee dot org
  Target Milestone: ---

When I compile bingutils-gdb with gcc7 I get the following warnings:

In file included from /git/binutils-gdb/bfd/coff-i386.c:614:0,
                 from /git/binutils-gdb/bfd/pei-i386.c:45:
/git/binutils-gdb/bfd/coffcode.h: In function ‘coff_write_object_contents’:
/git/binutils-gdb/bfd/coffcode.h:3775:46: error: ‘%lu’ directive output may be
truncated writing between 1 and 20 bytes into a region of size 8
[-Werror=format-truncation=]
        snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long)
string_size);
                                              ^~~
/git/binutils-gdb/bfd/coffcode.h:3775:44: note: directive argument in the range
[4, 18446744073709551614]
        snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long)
string_size);
                                            ^~~~~~
/git/binutils-gdb/bfd/coffcode.h:3775:8: note: format output between 3 and 22
bytes into a destination of size 9
        snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long)
string_size);
       
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:1688: pei-i386.lo] Error 1
/git/binutils-gdb/bfd/elf32-nds32.c: In function ‘nds32_elf_pick_relax’:
/git/binutils-gdb/bfd/elf32-nds32.c:14976:27: error: ‘%08lx’ directive output
may be truncated writing between 8 and 16 bytes into a region of size 9
[-Werror=format-truncation=]
       snprintf (code, 9, "%08lx", insn);
                           ^~~~~
/git/binutils-gdb/bfd/elf32-nds32.c:14976:26: note: using the range [1,
18446744073709551615] for directive argument
       snprintf (code, 9, "%08lx", insn);
                          ^~~~~~~
/git/binutils-gdb/bfd/elf32-nds32.c:14976:7: note: format output between 9 and
17 bytes into a destination of size 9
       snprintf (code, 9, "%08lx", insn);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:1688: elf32-nds32.lo] Error 1


/git/binutils-gdb/opcodes/aarch64-opc.c: In function
‘print_register_offset_address’:
/git/binutils-gdb/opcodes/aarch64-opc.c:2967:29: error: ‘%li’ directive output
may be truncated writing between 1 and 20 bytes into a region of size 12
[-Werror=format-truncation=]
  snprintf (tb, sizeof (tb), ", %s #%" PRIi64, shift_name,
                             ^~~~~~~~~
/git/binutils-gdb/opcodes/aarch64-opc.c:2967:36: note: format string is defined
here
  snprintf (tb, sizeof (tb), ", %s #%" PRIi64, shift_name,
/git/binutils-gdb/opcodes/aarch64-opc.c:2967:29: note: using the range [1,
-9223372036854775808] for directive argument
  snprintf (tb, sizeof (tb), ", %s #%" PRIi64, shift_name,
                             ^~~~~~~~~
/git/binutils-gdb/opcodes/aarch64-opc.c:2967:2: note: format output between 6
and 25 bytes into a destination of size 16
  snprintf (tb, sizeof (tb), ", %s #%" PRIi64, shift_name,
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     opnd->shifter.amount);
     ~~~~~~~~~~~~~~~~~~~~~
/git/binutils-gdb/opcodes/aarch64-opc.c: In function ‘print_register_list’:
/git/binutils-gdb/opcodes/aarch64-opc.c:2868:22: error: ‘%li’ directive output
may be truncated writing between 1 and 20 bytes into a region of size 7
[-Werror=format-truncation=]
     snprintf (tb, 8, "[%" PRIi64 "]", opnd->reglist.index);
                      ^~~~
/git/binutils-gdb/opcodes/aarch64-opc.c:2868:24: note: format string is defined
here
     snprintf (tb, 8, "[%" PRIi64 "]", opnd->reglist.index);
/git/binutils-gdb/opcodes/aarch64-opc.c:2868:22: note: using the range [1,
-9223372036854775808] for directive argument
     snprintf (tb, 8, "[%" PRIi64 "]", opnd->reglist.index);
                      ^~~~
/git/binutils-gdb/opcodes/aarch64-opc.c:2868:5: note: format output between 4
and 23 bytes into a destination of size 8
     snprintf (tb, 8, "[%" PRIi64 "]", opnd->reglist.index);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:1003: aarch64-opc.lo] Error 1
make[1]: *** [Makefile:1046: all-recursive] Error 1
make: *** [Makefile:693: all] Error 2

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