https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64328
Bug ID: 64328
Summary: addr_equal-1.c fails execution.
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: belagod at gcc dot gnu.org
FAIL: gcc.dg/addr_equal-1.c execution test
$ aarch64-none-elf-gcc
/work/dev/arm/src/gcc/gcc/testsuite/gcc.dg/addr_equal-1.c -O2 -lm -mcmodel=tiny
-fPIC -o foo.exe
fails on AArch64. This test was introduced by this patch:
https://gcc.gnu.org/ml/gcc-patches/2014-12/msg00613.html
The specific test that's failing is
if (!__builtin_constant_p (&def_var0 == &def_var1))
abort();
where def_var0 and def_var1 are globals declared in the same translation unit.
When compiled with fPIC, how much can we know about their addresses at
compile-time for the above test to pass? Is this test valid?
