Execute tutorials/geom/RadioNuclides.C error

[physpy]

On ROOT-v6-4-6, execute tutorials/geom/RadioNuclides.C ,there are some errors.

log:

| Welcome to ROOT 6.04/06 root.cern.ch |
| (c) 1995-2014, The ROOT Team |
| Built for linuxx8664gcc |
| From tag , 13 October 2015 |

Try ‘.help’, ‘.demo’, ‘.license’, ‘.credits’, ‘.quit’/‘.q’

Processing root-v6-4-6/tutorials/geom/RadioNuclides.C…

---

Radioactive material:
Material C14 A=14 Z=6 rho=1.3 radlen=38.104 intlen=64.8883 index=0
Radioactive material evolution after 4756.47 years:
Mixture C14-evol Aeff=14 Zeff=6.43698 rho=1.3 radlen=33.5596 intlen=64.8883 index=1
Element #0 : 6-C-014 Z= 6.00 A= 14.00 w= 0.563
Element #1 : 7-N-014 Z= 7.00 A= 14.00 w= 0.437

---

Radioactive mixture:
Mixture mix Aeff=69.25 Zeff=31.7 rho=7.3 radlen=1.62598 intlen=19.5449 index=2
Element #0 : 20-Ca-053 Z= 20.00 A= 53.00 w= 0.350
Element #1 : 38-Sr-078 Z= 38.00 A= 78.00 w= 0.650
Radioactive mixture evolution after 1000 seconds:
Mixture mix-evol Aeff=69.1859 Zeff=32.21 rho=7.28554 radlen=1.58707 intlen=19.5738 index=3
Element #0 : 23-V-052 Z= 23.00 A= 52.00 w= 0.009
Element #1 : 24-Cr-052 Z= 24.00 A= 52.00 w= 0.094
Element #2 : 24-Cr-053 Z= 24.00 A= 53.00 w= 0.245
Element #3 : 38-Sr-078 Z= 38.00 A= 78.00 w= 0.006
Element #4 : 37-Rb-078 Z= 37.00 A= 78.00 w= 0.387
Element #5 : 36-Kr-078 Z= 36.00 A= 78.00 w= 0.258
6-C-014
20-Ca-053
time[s];Concentration_of_6 is unknown.
C is unknown.
time[s];Concentration_of_6 is unknown.
C is unknown.

Error in TFormula::Eval: Formula is invalid and not ready to execute

[mato]

Thanks for reporting the problem. This is a remanent of new TFormula implementation in ROOT6. A fix will follow soon.

[mato]

Fix committed to master github.com/root-mirror/root/com … c5bf2a7e95