https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66545
Bug ID: 66545
Summary: ICE on using undefined parameter/variable values
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
This code uses parameter/variable values before they are defined/initialized.
$ cat z1_complex.f90
program p
complex, parameter :: c1 = (c1)
complex, parameter :: c2 = c2
complex :: c3 = (c3)
complex :: c4 = c4
complex :: c5
complex :: c6
c5 = (c5)
c6 = c6
end
For example, compiling with :
$ gfortran -g -O0 -Wall -fcheck=all -fno-frontend-optimize \
-Wuninitialized -fsanitize=undefined \
-c z1_complex.f90
yields (with gfortran 5.1.1 on SUSE Linux 13.2, 64 bit) :
f951: internal compiler error: Segmentation fault
