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Building libunwind with clang results in multiple errors:
setjmp/siglongjmp.c:111:48: error: incompatible pointer to integer conversion passing 'unw_word_t *' (aka 'unsigned long *') to parameter of type 'unw_word_t' (aka 'unsigned long'); remove & [-Wint-conversion]
if (unw_set_reg (&c, UNW_REG_EH + 2, &wp[JB_MASK]) < 0)
^~~~~~~~~~~~
../include/libunwind-common.h:283:56: note: passing argument to parameter here
extern int unw_set_reg (unw_cursor_t *, int, unw_word_t);
^
dwarf/Gparser.c:901:5: error: call to undeclared function '_Ux86_64_stash_frame'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
tdep_stash_frame (c, rs);
^
../include/tdep-x86_64/libunwind_i.h:246:41: note: expanded from macro 'tdep_stash_frame'
#define tdep_stash_frame UNW_OBJ(stash_frame)
^
The first error is because the syntax is indeed wrong, the '&' should be
removed.
The second error is because tdep_stash_frame() is only declared for
Linux in libunwind_i.h, but it is used in Gparser.c. Declare it
unconditionally to fix the problem.
PR: 265519
Approved by: sunpoet (maintainer)
MFH: 2022Q3
13 lines
596 B
C
13 lines
596 B
C
--- include/tdep-x86_64/libunwind_i.h.orig 2021-11-26 16:58:55 UTC
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+++ include/tdep-x86_64/libunwind_i.h
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@@ -288,9 +288,9 @@ extern void tdep_reuse_frame (struct dwarf_cursor *c,
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extern int tdep_cache_frame (struct dwarf_cursor *c);
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extern void tdep_reuse_frame (struct dwarf_cursor *c,
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int frame);
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+#endif
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extern void tdep_stash_frame (struct dwarf_cursor *c,
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struct dwarf_reg_state *rs);
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-#endif
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extern int tdep_getcontext_trace (unw_tdep_context_t *);
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extern int tdep_trace (unw_cursor_t *cursor, void **addresses, int *n);
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