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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/64097] Bug with nested WHERE constructs
Date: Sat, 10 Oct 2015 11:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64097

--- Comment #2 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Dominique d'Humieres from comment #1)
> WORKSFORME on x86_64-apple-darwin14 with 4.8 up to trunk (6.0) and the
> various options I tried:
> 
> [Book15] f90/bug% gfortran pr64097.f90 -fcheck=all -fsanitize=address
> [Book15] f90/bug% a.out
>            0
>           58
> 
> gfortran is 5.2.

I think the trapping of exceptions must be enabled.

% gfortran --version
GNU Fortran (GCC) 5.1.0

% gfortran -O -march=native -g -ffpe-trap=zero,overflow,invalid
nested-where.f90 && ./a.out 
           0

Program received signal SIGFPE: Floating-point exception - erroneous arithmetic
operation.

Backtrace for this error:
#0  0x7F09C1E59B97
#1  0x7F09C1E58D90
#2  0x7F09C1430F4F
#3  0x7F09C1BE7277
#4  0x7F09C1BEBE50
#5  0x400A34 in MAIN__ at nested-where.f90:0
Floating exception


Without -ffpe-trap=... I get the same as you.