http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52779
Bug #: 52779
Summary: [4.6 only] LTO produces false warning with type
merging
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: pins...@gcc.gnu.org
Take the following three files:
--- t0.c ----
void g1 (void) {
__builtin_printf("+++\n");
}
--- CUT ---
--- t1.c ---
const char glbl_str4[] = "New";
--- CUT ---
--- t2.c ---
extern const char glbl_str4[];
void g0 (void) {
f0(glbl_str4);
}
--- CUT ---
Using "gcc -flto -O3 -r -nostdlib t0.c t1.c t2.c" produces the following
warning:
t2.c:1:19: warning: type of ‘glbl_str4’ does not match original declaration
[enabled by default]
t1.c:1:13: note: previously declared here
---- CUT ----
Note the order of the files is required so is the semi unrelated t0.c file.
