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As the following testcase shows, unwind.h on ARM can't be (starting with GCC
10) compiled with -std=c* modes, only -std=gnu* modes.
The problem is it uses asm keyword, which isn't a keyword in those modes
(system headers vs. non-system ones don't make a difference here).
glibc and other installed headers use __asm or __asm__ keywords instead that
work fine in both standard and gnu modes.
While there, as it is an installed header, I think it is also wrong to
completely ignore any identifier namespace rules.
The generic unwind.h defines just _Unwind* namespace identifiers plus
_sleb128_t/_uleb128_t (but e.g. unlike libstdc++/glibc headers doesn't
uglify operand names), the ARM unwind.h is much worse here. I've just
changed the gnu_Unwind_Find_got function at least not be in user identifier
namespace, but perhaps it would be good to go further and rename e.g.
or e.g.
typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State,
_Unwind_Control_Block *, _Unwind_Context *);
in unwind-arm-common.h.
2020-02-07 Jakub Jelinek <jakub@redhat.com>
PR target/93615
* config/arm/unwind-arm.h (gnu_Unwind_Find_got): Rename to ...
(_Unwind_gnu_Find_got): ... this. Use __asm instead of asm. Remove
trailing :s in asm. Formatting fixes.
(_Unwind_decode_typeinfo_ptr): Adjust caller.
* gcc.dg/pr93615.c: New test.
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|---|---|---|
| .. | ||
| bpabi-lib.h | ||
| bpabi-v6m.S | ||
| bpabi.c | ||
| bpabi.S | ||
| cmse_nonsecure_call.S | ||
| cmse.c | ||
| crtfastmath.c | ||
| crti.S | ||
| crtn.S | ||
| fp16.c | ||
| freebsd-atomic.c | ||
| ieee754-df.S | ||
| ieee754-sf.S | ||
| lib1funcs.S | ||
| libgcc-bpabi.ver | ||
| libunwind.S | ||
| linux-atomic-64bit.c | ||
| linux-atomic.c | ||
| pr-support.c | ||
| sfp-machine.h | ||
| symbian-lib.h | ||
| t-arm | ||
| t-bpabi | ||
| t-elf | ||
| t-freebsd | ||
| t-linux | ||
| t-linux-eabi | ||
| t-netbsd | ||
| t-netbsd-eabi | ||
| t-softfp | ||
| t-strongarm-elf | ||
| t-symbian | ||
| t-vxworks7 | ||
| t-wince-pe | ||
| unaligned-funcs.c | ||
| unwind-arm-vxworks.c | ||
| unwind-arm.c | ||
| unwind-arm.h | ||