https://sourceware.org/bugzilla/show_bug.cgi?id=26389
Bug ID: 26389
Summary: nm print "c" for a common symbol with -flto and
-fcommon
Product: binutils
Version: 2.34
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: mliska at suse dot cz
Target Milestone: ---
Starting from Alan's 49d9fd42acefc1c0ee282b5808874a1074bf1ecd, the following
changed:
$ cat conf.c
char nm_test_var;
$ gcc -flto -fcommon -c conf.c
$ ./binutils/nm-new conf.o
00000000 c nm_test_var
while before the revision the following is printed:
$ nm conf.o
00000000 C nm_test_var
Note that the "c" value is not supported by libtool and so a configure
detection fails for various packages.
I think we want to print "C" for a common symbol from LTO plugin. So one needs
something like:
bfd/syms.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/bfd/syms.c b/bfd/syms.c
index c1de8ebab1..baa22cfcd9 100644
--- a/bfd/syms.c
+++ b/bfd/syms.c
@@ -653,7 +653,9 @@ bfd_decode_symclass (asymbol *symbol)
if (symbol->section && bfd_is_com_section (symbol->section))
{
- if (symbol->section == bfd_com_section_ptr)
+ if (symbol->section == bfd_com_section_ptr
+ || (symbol->section->name
+ && strcmp (symbol->section->name, "plug") == 0))
return 'C';
else
return 'c';
And, can you please document the "c" in manual page?
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