http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49899
Summary: ICE when redeclaring a static function as weak
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ni...@redhat.com
Created attachment 24862
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24862
Proposed patch and new testcase
If an already defined static function is redefined as being both public and
weak, the compiler generates an ICE:
% cat test.c
static long foo (void) { return 0; }
long foo (void) __attribute__((weak));
% gcc test.c
test.c:1:12: internal compiler error: in function_and_variable_visibility,
at ipa.c:408
The uploaded patch is an attempt to fix this by adding a check into
varasm.c:merge_weak(). I was not sure however whether the redeclaration is an
error, or if it should be honoured and the function made non-static.
