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Paul Eggert authored
alloc.c had bitrotted a bit, and used an undefined symbol stack_base when Emacs was built on Solaris sparc, leading to compilation failures. Also, code related to __builtin_unwind_init was unnecessarily duplicated. Fix the bitrot and remove some duplication. * src/alloc.c: Remove uses of GC_SAVE_REGISTERS_ON_STACK, since it is never defined. (test_setjmp) [!HAVE___BUILTIN_UNWIND_INIT && GC_SETJMP_WORKS]: Define a no-op dummy, to simplify use. (test_setjmp) [!GC_SETJMP_WORKS]: Test setjmp_tested_p here rather than in the caller, to simplify use. (stacktop_sentry): New type. (__builtin_unwind_init) [!HAVE___BUILTIN_UNWIND_INIT]: New macro. (SET_STACK_TOP_ADDRESS): New macro, containing code that was duplicated. (flush_stack_call_func, Fgarbage_collect): Use it. (init_alloc): Omit unnecessary initialization. After dumping, Emacs need not re-test setjmp.
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