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gdb: workaround sparc memcpy fortify error

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Building on an x86_64-linux system with --enable-targets=all fails on the
sparc code with a fortify error:

cc1: warnings being treated as errors
In file included from /usr/include/string.h:640,
                 from gnulib/string.h:23,
                 from ../../gdb/gdb_string.h:25,
                 from ../../gdb/vec.h:25,
                 from ../../gdb/memattr.h:24,
                 from ../../gdb/target.h:60,
                 from ../../gdb/exec.h:23,
                 from ../../gdb/gdbcore.h:31,
                 from ../../gdb/sparc-tdep.c:29:
In function 'memcpy',
    inlined from 'sparc32_store_return_value' at ../../gdb/sparc-tdep.c:1112,
    inlined from 'sparc32_return_value' at ../../gdb/sparc-tdep.c:1170:
/usr/include/bits/string3.h:52: error: call to __builtin___memcpy_chk will
        always overflow destination buffer
make: *** [sparc-tdep.o] Error 1

This is due to the gcc optimizer bug PR37060, so tweak the gdb_assert ()
to avoid the issue.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2010-04-21 20:13:41 +00:00
parent 2462afa169
commit a9789a6b9d
2 changed files with 6 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2010-04-21 Mike Frysinger <vapier@gentoo.org>
* gdb/sparc-tdep.c (sparc32_store_return_value): Add gdb_assert ()
for len <= 8.
2010-04-21 Chris Moller <cmoller@redhat.com>
PR 9167

1
gdb/sparc-tdep.c
View file

@ -1105,6 +1105,7 @@ sparc32_store_return_value (struct type *type, struct regcache *regcache,
gdb_assert (!sparc_structure_or_union_p (type));
gdb_assert (!(sparc_floating_p (type) && len == 16));
gdb_assert (len <= 8);
if (sparc_floating_p (type))
{