https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91005
Bug ID: 91005
Summary: Cannot put a nested function into a different section
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: pipcet at gmail dot com
Target Milestone: ---
Created attachment 46523
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46523&action=edit
test case
Compiling the attached file fails:
/usr/bin/ld: /tmp/ccuSWyMB.o: in function `main':
inner-section.c:(.text+0x5): undefined reference to `inner.1911'
collect2: error: ld returned 1 exit status
I've looked into the problem a little, and it seems that the C frontend sets
DECL_CONTEXT only after the section attribute is handled, so this code
if (DECL_CONTEXT (decl) && TREE_CODE (DECL_CONTEXT (decl)) == FUNCTION_DECL)
{
node->origin = cgraph_node::get_create (DECL_CONTEXT (decl));
node->next_nested = node->origin->nested;
node->origin->nested = node;
}
in cgraph.c is run early, when DECL_CONTEXT isn't yet set, so the function is
never added to the nested list.
I might be wrong, though.
The attached patch seems to fix this specific example on this specific machine,
but I'm almost certain it'll turn out to be wrong somehow.
