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authorAlan Hayward <alan.hayward@arm.com>2019-01-21 15:51:49 +0000
committerAlan Hayward <alan.hayward@arm.com>2019-01-21 15:51:49 +0000
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tree244743e4b0361fb6426946c1dfe9567a1ec64f53 /config/mt-mips-elfoabi
parenta6c9b4042921847ee52003811383e4b8bf5d5875 (diff)
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AArch64 AAPCS: Empty structs have non zero size in C++
When gdb.base/infcall-nested-structs.c is complied as C++, the compiler will not pass structs containing empty structs via float arguments. This is because structs in C++ have a minimum size of 1, causing padding in the struct once compiled. The AAPCS does not allow structs with padding to be passed in float arguments. Add padding checks to AArch64 and add C++ compile variant to the test. Some of the tests fail on X86_64. This has been raised as bug gdb/24104. gdb/ChangeLog: * aarch64-tdep.c (aapcs_is_vfp_call_or_return_candidate_1): Check for padding. gdb/testsuite/ChangeLog: * gdb.base/infcall-nested-structs.exp: Test C++ in addition to C.
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