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[libunwind] Increase the external value of _LIBUNWIND_CURSOR_SIZE for SEH/x86_64

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For x86_64 Windows targets (that use SEH), _LIBUNWIND_CURSOR_SIZE
is 204; this fixes corruption in test cases that include libunwind.h
without manually defining _LIBUNWIND_IS_NATIVE_ONLY.

If the libunwind.h header is included without defining
_LIBUNWIND_IS_NATIVE_ONLY (like in the libunwind test cases), the
sizes are set to accommodate the maximum possible cursors and
contexts.

(Alternatively, __libunwind_config.h should be changed to default
to native unwinding unless cross unwinding has been requested.
Cross unwinding isn't implemented as far as I know anyway.)

Differential Revision: https://reviews.llvm.org/D147634
This commit is contained in:
Martin Storsjö 2023-04-05 14:12:24 +03:00
parent 469bdbd62c
commit 55abdef3da
1 changed files with 1 additions and 1 deletions
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libunwind/include/__libunwind_config.h
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@ -198,7 +198,7 @@
# define _LIBUNWIND_TARGET_S390X 1 # define _LIBUNWIND_TARGET_S390X 1
#define _LIBUNWIND_TARGET_LOONGARCH 1 #define _LIBUNWIND_TARGET_LOONGARCH 1
# define _LIBUNWIND_CONTEXT_SIZE 167 # define _LIBUNWIND_CONTEXT_SIZE 167
# define _LIBUNWIND_CURSOR_SIZE 179 # define _LIBUNWIND_CURSOR_SIZE 204
# define _LIBUNWIND_HIGHEST_DWARF_REGISTER 287 # define _LIBUNWIND_HIGHEST_DWARF_REGISTER 287
#endif // _LIBUNWIND_IS_NATIVE_ONLY #endif // _LIBUNWIND_IS_NATIVE_ONLY