Greetings,
Using clang13 on FreeBSD 12.4 RELEASE, we failed at building libdwarf:
cc -O2 -pipe -g -MD -MF.depend.libdwarf_lineno.o -MTlibdwarf_lineno.o
-std=gnu99 -Wno-format-zero-length -fstack-protector-strong -Wsystem-headers
-Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings
-Wswitch -Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline
-Wnested-externs -Wredundant-decls -Wold-style-definition -Wno-pointer-sign
-Wmissing-variable-declarations -Wthread-safety -Wno-empty-body
-Wno-string-plus-int -Wno-unused-const-variable
-Wno-error=unused-but-set-variable -Qunused-arguments -I.
-I/usr/home/kazuo/devel/elftoolchain-code-r4065-trunk/libdwarf
-I/usr/home/kazuo/devel/elftoolchain-code-r4065-trunk/libdwarf/../common
-I/usr/home/kazuo/devel/elftoolchain-code-r4065-trunk/libdwarf/../libelf -c
libdwarf_lineno.c -o libdwarf_lineno.o
libdwarf_lineno.c:648:16: error: comparison of integers of different signs:
'int' and 'Dwarf_Unsigned' (aka 'unsigned long') [-Werror,-Wsign-compare]
for (i = 0; i < li->li_inclen; i++) {
~ ^ ~~~~~~~~~~~~~
libdwarf_lineno.c:690:16: error: comparison of integers of different signs:
'int' and 'Dwarf_Unsigned' (aka 'unsigned long') [-Werror,-Wsign-compare]
for (i = 0; i < li->li_lflen; i++) {
~ ^ ~~~~~~~~~~~~
libdwarf_lineno.c:480:12: error: variable 'ret' is uninitialized when used here
[-Werror,-Wuninitialized]
return ret;
^~~
libdwarf_lineno.c:446:32: note: initialize the variable 'ret' to silence this
warning
int dwarf_size, fmt, i, j, ret;
^
I can try to get around it by disabling Werror but that looks like a big yikes.
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