https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62251
--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> --- Test fails at line 58: if (str3 /= " 1.41421356237309504880168872420969798") call abort() _gfortrani_compare_string (len1=len1@entry=80, s1=0x800003fffdff0b90 " 1.41421356237309504880168872420969800", ' ' <repeats 40 times>, "1.41421356237309504880168872420969800", ' ' <repeats 43 times>, s1@entry=<error reading variable: can't compute CFA for this frame>, len2=len2@entry=40, s2=s2@entry=0x4000000000001a70 " 1.414213562373095048801688724209697981.41421356237309504880168872420969798") at ../../../gcc/libgfortran/intrinsics/string_intrinsics_inc.c:85 (gdb) bt #0 0x800003fffdfd7544 in _gfortrani_compare_string (len1=len1@entry=80, s1=0x800003fffdff0b90 " 1.41421356237309504880168872420969800", ' ' <repeats 40 times>, "1.41421356237309504880168872420969800", ' ' <repeats 43 times>, s1@entry=<error reading variable: can't compute CFA for this frame>, len2=len2@entry=40, s2=s2@entry=0x4000000000001a70 " 1.414213562373095048801688724209697981.41421356237309504880168872420969798") at ../../../gcc/libgfortran/intrinsics/string_intrinsics_inc.c:85 #1 0x40000000000036c0 in test_qp () at /test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/quad_2.f90:58 #2 0x4000000000003840 in main (argc=<optimized out>, argv=<optimized out>) at /test/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/quad_2.f90:78 With debug comments removed: # ./quad_2.exe > 1.00000000000000000000000000000000000< >1.00000000000000000000000000000000000< > 1.41421356237309504880168872420969800< >1.41421356237309504880168872420969800< Program aborted. Backtrace: #0 0xC00000000033D86B ABORT instruction (core dumped)