https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90344
Bug ID: 90344
Summary: small code that compiles and runs in 7.3.0 but not
7.4.1
Product: gcc
Version: 7.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: urbanjost at comcast dot net
Target Milestone: ---
Created attachment 46288
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46288&action=edit
minimal test case that still causes segfault
The test case is the minimal code that I could get to reproduce a segmentation
fault at compile time with optimization level >0 on Cygwin with gfortran 7.4.1.
This same code worked in version 7.3.0. I get
BUG.f90:19:0:
write(*,*)all(func1(s2a('ABCDEFG')).or.func2(s2a('ABCDEFG')))
internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
Almost any change and the fault goes away. If the WRITE uses just FUNC1 or
FUNC2 or does not call S2A or just about any other change and the segfault goes
away. Goes away with -O0; but occurs with -O1 switch.
