https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69455
Bug ID: 69455
Summary: [5/6 Regression] Linking error(s) when using intrinsic
modules in two BLOCK
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
Target Milestone: ---
When linking the following code
block
use, intrinsic :: iso_c_binding, only: wp => c_float, ik => c_int
print *, ik, wp
end block
block
use, intrinsic :: iso_c_binding, only: wp => c_double, ik => c_long
print *, ik, wp
end block
end
with gfortran 5.3.0 or trunk (6.0), I get the following error on
x86_64-apple-darwin14
/var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccR0DlmQ.s:95:29: error:
invalid symbol redefinition
.zerofill __DATA,__pu_bss2,_____iso_c_binding_MOD_wp,4,2
^
/var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccR0DlmQ.s:97:29: error:
invalid symbol redefinition
.zerofill __DATA,__pu_bss2,_____iso_c_binding_MOD_ik,4,2
^
The change occurred on trunk between revisions r229482 (2015-10-28, OK) and
r229608 (2015-10-30, errors), possibly r229540 (pr67885).
Comparing the assembly between the two revisions I see
- .globl _____iso_c_binding_MOD_wp
- .zerofill __DATA,__pu_bss2,_____iso_c_binding_MOD_wp,4,2
- .globl _____iso_c_binding_MOD_ik
- .zerofill __DATA,__pu_bss2,_____iso_c_binding_MOD_ik,4,2
- .globl _____iso_c_binding_MOD_wp
- .zerofill __DATA,__pu_bss2,_____iso_c_binding_MOD_wp,4,2
- .globl _____iso_c_binding_MOD_ik
- .zerofill __DATA,__pu_bss2,_____iso_c_binding_MOD_ik,4,2
where the '-' were for r229608.
