https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84848
--- Comment #3 from dave.anglin at bell dot net --- On 2018-03-13 10:57 AM, dominiq at lps dot ens.fr wrote: > WORKSFORME on x86_64-apple-darwin17. A target issue? I'm not sure how this test is supposed to work: Breakpoint 3, 0x00010498 in main (argc=<optimized out>, argv=<optimized out>) at /home/dave/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/coarray/event_3.f08:10 10 call exchange (gdb) disass Dump of assembler code for function main: 0x00010488 <+0>: stw rp,-14(sp) 0x0001048c <+4>: ldo 40(sp),sp 0x00010490 <+8>: b,l 0x10448,rp 0x00010494 <+12>: nop => 0x00010498 <+16>: ldi 7,r26 0x0001049c <+20>: ldil L%10800,r25 0x000104a0 <+24>: b,l 0x10458,rp 0x000104a4 <+28>: ldo 2ec(r25),r25 0x000104a8 <+32>: ldw -38(sp),ret0 0x000104ac <+36>: cmpib,<> 0,ret0,0x104c0 <main+56> 0x000104b0 <+40>: ldi 0,ret0 0x000104b4 <+44>: ldw -54(sp),rp 0x000104b8 <+48>: bv r0(rp) 0x000104bc <+52>: ldo -40(sp),sp 0x000104c0 <+56>: ldi 0,r25 0x000104c4 <+60>: b,l 0x10468,rp 0x000104c8 <+64>: ldi 1,r26 0x000104cc <+68>: nop End of assembler dump. (gdb) x/x $sp - 0x38 0xf8d02308: 0x00130ee8 (gdb) c Continuing. Breakpoint 2, 0x000104ac in exchange () at /home/dave/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/coarray/event_3.f08:17 17 if (cnt /= 2) error stop 1 (gdb) x/x $sp - 0x38 0xf8d02308: 0x00130ee8 (gdb) p/x $ret0 $1 = 0x130ee8 cnt is a location on the stack but the address of options.0.923 is passed in %r25 to _gfortran_set_options. It looks as if the "call event_query(x, cnt)" line in the test has bee optimized away.
