http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61001
Bug ID: 61001
Summary: Builtin memcpy and memset cannot be overridden when
-flto is used
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: eblot.ml at gmail dot com
On arm-none-eabi target, when -flto mode is enabled, the linker does not allow
to override the builtin definitions for memset and memcpy:
/var/folders/g0/7v4by70d4nd052zj7wj7v3m80000gn/T//cc3YmscA.ltrans8.ltrans.o: In
function `memset':
main/src/fastmem.c:94: multiple definition of `memset'
/usr/local/Cellar/arm-eabi-gcc49/4.9.0/lib/gcc/arm-eabi/4.9.0/../../../../arm-eabi/lib/libg.a(lib_a-memset.o):memset.c:(.text+0x0):
first defined here
/var/folders/g0/7v4by70d4nd052zj7wj7v3m80000gn/T//cc3YmscA.ltrans8.ltrans.o: In
function `memcpy':
main/src/fastmem.c:15: multiple definition of `memcpy'
/usr/local/Cellar/arm-eabi-gcc49/4.9.0/lib/gcc/arm-eabi/4.9.0/../../../../arm-eabi/lib/libg.a(lib_a-memcpy-stub.o):memcpy-stub.c:(.text+0x0):
first defined here
This issue has already been reported here:
http://permalink.gmane.org/gmane.comp.gcc.help/46588
