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Suppress compile time warning message when compiling coff-rs6000.c with gcc v8.

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* coff-rs6000.c (_bfd_xcoff_put_ldsymbol_name): Suppress warnings
	about potentially truncated strncpy operations.
	(_bfd_xcoff_put_symbol_name): Likewise.
This commit is contained in:
Nick Clifton
2018-08-01 14:46:43 +01:00
parent 4a9f7d653c
commit c25179e71f
2 changed files with 24 additions and 0 deletions
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4
bfd/ChangeLog
View File

@ -1,5 +1,9 @@
2018-08-01 Nick Clifton <nickc@redhat.com> 2018-08-01 Nick Clifton <nickc@redhat.com>
* coff-rs6000.c (_bfd_xcoff_put_ldsymbol_name): Suppress warnings
about potentially truncated strncpy operations.
(_bfd_xcoff_put_symbol_name): Likewise.
* elf32-avr.c (avr_stub_name): Check for a NULL return from * elf32-avr.c (avr_stub_name): Check for a NULL return from
bfd_malloc. bfd_malloc.

20
bfd/coff-rs6000.c
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@ -3506,6 +3506,23 @@ xcoff_ppc_relocate_section (bfd *output_bfd,
return TRUE; return TRUE;
} }
/* gcc-8 warns (*) on all the strncpy calls in this function about
possible string truncation. The "truncation" is not a bug. We
have an external representation of structs with fields that are not
necessarily NULL terminated and corresponding internal
representation fields that are one larger so that they can always
be NULL terminated.
gcc versions between 4.2 and 4.6 do not allow pragma control of
diagnostics inside functions, giving a hard error if you try to use
the finer control available with later versions.
gcc prior to 4.2 warns about diagnostic push and pop.
gcc-5, gcc-6 and gcc-7 warn that -Wstringop-truncation is unknown,
unless you also add #pragma GCC diagnostic ignored "-Wpragma".
(*) Depending on your system header files! */
#if GCC_VERSION >= 8000
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wstringop-truncation"
#endif
static bfd_boolean static bfd_boolean
_bfd_xcoff_put_ldsymbol_name (bfd *abfd ATTRIBUTE_UNUSED, _bfd_xcoff_put_ldsymbol_name (bfd *abfd ATTRIBUTE_UNUSED,
struct xcoff_loader_info *ldinfo, struct xcoff_loader_info *ldinfo,
@ -3575,6 +3592,9 @@ _bfd_xcoff_put_symbol_name (struct bfd_link_info *info,
} }
return TRUE; return TRUE;
} }
#if GCC_VERSION >= 8000
# pragma GCC diagnostic pop
#endif
static asection * static asection *
xcoff_create_csect_from_smclas (bfd *abfd, xcoff_create_csect_from_smclas (bfd *abfd,