[Bug 265519] devel/libunwind: fix build with clang 15
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Date: Sat, 30 Jul 2022 13:56:27 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265519
Bug ID: 265519
Summary: devel/libunwind: fix build with clang 15
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: Individual Port(s)
Assignee: sunpoet@FreeBSD.org
Reporter: dim@FreeBSD.org
Flags: maintainer-feedback?(sunpoet@FreeBSD.org)
Assignee: sunpoet@FreeBSD.org
During an exp-run for llvm 15 (see bug 265425), it turned out that
devel/libunwind fails to build with clang and lld 15, with 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.
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