FreeChainXenon/binutils-gdb
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BFD_INIT_MAGIC

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This patch performs a run-time test that a shared libbfd.so has been
compiled with the same size bfd_vma as that of apps using the library.
On a 32-bit host it is easily possible to have one libbfd.so compiled
to support 64-bit targets (or configured with --enable-64-bit-bfd)
while another only supports 32-bit targets.  The two libraries will
have differently sized bfd_vma types, and if the wrong one is loaded
all sorts of weird behaviour might be seen.

bfd/
	PR 23534
	* init.c (BFD_INIT_MAGIC): Define.
	(bfd_init): Return BFD_INIT_MAGIC.
	bfd-in2.h: Regenerate.
binutils/
	PR 23534
	* addr2line.c (main): Exit with fatal error if bfd_init
	returns an unexpected value.
	* ar.c (main): Likewise.
	* dlltool.c (identify_dll_for_implib): Likewise.
	* nm.c (main): Likewise.
	* objcopy.c (main): Likewise.
	* objdump.c (main): Likewise.
	* size.c (main): Likewise.
	* strings.c (main): Likewise.
	* windmc.c (main): Likewise.
	* windres.c (main): Likewise.
gas/
	PR 23534
	* as.c (main): Exit with fatal error if bfd_init returns an
	unexpected value.
ld/
	PR 23534
	* ldmain.c (main): Exit with fatal error if bfd_init returns
	an unexpected value.
This commit is contained in:
Alan Modra 2018-10-15 16:10:27 +10:30
parent dc86962bf1
commit bf2dd8d7cf
18 changed files with 72 additions and 15 deletions
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3
binutils/objdump.c
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@ -3842,7 +3842,8 @@ main (int argc, char **argv)
expandargv (&argc, &argv);
bfd_init ();
if (bfd_init () != BFD_INIT_MAGIC)
fatal (_("fatal error: libbfd ABI mismatch"));
set_default_bfd_target ();
while ((c = getopt_long (argc, argv,