http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54901
Bug #: 54901
Summary: [4.8 Regression] air.f90, aermod.f90, and mdbx.f90 are
miscompiled with '-m64 -O3 -funroll-loops
-fwhole-program' after revision 192213
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: domi...@lps.ens.fr
CC: ste...@gcc.gnu.org
The tests air.f90, aermod.f90, and mdbx.f90 are miscompiled with '-m64 -O3
-funroll-loops -fwhole-program' after revision 192213. The backtraces are:
(1) air
...
ITERATION# TIME FINAL MASS RESIDUAL
Program received signal SIGSEGV, Segmentation fault.
0x000000010000269b in points (d=..., np=<value optimized out>, nd=<value
optimized out>) at air.f90:1110
1110 Dr(k,j) = d1(N-k,N-j)
(gdb) bt
#0 0x000000010000269b in points (d=..., np=<value optimized out>, nd=<value
optimized out>) at air.f90:1110
#1 0x0000000100004b52 in MAIN__ () at air.f90:160
(2) aermod
...
First hour of profile data
YR MO DY HR HEIGHT F WDIR WSPD AMB_TMP sigmaA sigmaW sigmaV
99 01 01 01 7.0 1 1. 2.60 262.6 99.0 -99.00 -99.00
F indicates top of profile (=1) or below (=0)
+Now Processing Data For Day No. 1 of 1999
Program received signal SIGSEGV, Segmentation fault.
wake_sig (x=<value optimized out>, xd=104.343887, xold=44.0807877,
turbz=0.221128643, turby=0.300897658, szold=Cannot access memory at address 0x8
) at aermod.f90:38204
38204 SZ = SZOLD + DELX*TURBZ
(gdb) bt
#0 wake_sig (x=<value optimized out>, xd=104.343887, xold=44.0807877,
turbz=0.221128643, turby=0.300897658, szold=Cannot access memory at address 0x8
) at aermod.f90:38204
#1 0x0000000100071ec9 in wake_dfsn (ldbhr=.FALSE., xi=40.076088,
szi=0.596251428, syi=0.618943393, z=<value optimized out>, z=<value optimized
out>)
at aermod.f90:36900
#2 0x0000000100084eee in numrise (ldbhr=<value optimized out>, h=<value
optimized out>, reff=<value optimized out>, texit=<value optimized out>,
wexit=<value optimized out>, ntr=<value optimized out>, xtr=<value
optimized out>, ytr=<value optimized out>, ztr=<value optimized out>,
rtr=<value optimized out>, linwake=.TRUE., numwake=<value optimized out>,
numwake=<value optimized out>, rtr=<value optimized out>,
ztr=<value optimized out>, ytr=<value optimized out>, xtr=<value optimized
out>, ntr=<value optimized out>, wexit=<value optimized out>,
texit=<value optimized out>, reff=<value optimized out>, h=<value optimized
out>, ldbhr=<value optimized out>) at aermod.f90:35360
#3 0x0000000100095856 in prmdelh (xarg=30.6145649, l_inwake=.TRUE.) at
aermod.f90:39784
#4 0x00000001000a143f in prmcalc (xbrec=<value optimized out>, ybrec=<value
optimized out>, ybrec=<value optimized out>,
xbrec=<value optimized out>) at aermod.f90:39767
#5 0x00000001000c237f in pcalc () at aermod.f90:6282
#6 0x00000001000c6117 in hrloop () at aermod.f90:5761
#7 0x00000001000d66f6 in aermod () at aermod.f90:2194
#8 0x00000001000f9e9f in main (argc=<value optimized out>, argv=<value
optimized out>) at aermod.f90:2038
#9 0x00000001000009f4 in start ()
(3) mdbx
...
STEP LP KIN.E POT.E TOT.E DIFFUS PX PY PZ
---- -- ------- ------- ------- -------- -------- -------- --------
Program received signal SIGSEGV, Segmentation fault.
0x0000000100005a97 in cbuild (ransq=<value optimized out>, icode=1,
ransq=<value optimized out>) at mdbx.f90:1510
1510 IF ( npc(icell).GT.npcusd ) npcusd = npc(icell)
(gdb) bt
#0 0x0000000100005a97 in cbuild (ransq=<value optimized out>, icode=1,
ransq=<value optimized out>) at mdbx.f90:1510
#1 0x0000000100007bc7 in mlist (lmethd=<value optimized out>) at mdbx.f90:1240
#2 0x000000010000deb0 in master (nsteps=100, nlist=<value optimized out>,
method=<value optimized out>, skin=<value optimized out>,
ncorr=<value optimized out>, nprint=10) at mdbx.f90:1058
#3 0x000000010000ec17 in mdbnch () at mdbx.f90:120
#4 0x000000010000fa5f in main (argc=<value optimized out>, argv=<value
optimized out>) at mdbx.f90:171
#5 0x00000001000014b4 in start ()
