Description of problem:
We get defect reports like this from Coverity:

Error: MISSING_RETURN:
/tmp/tmpp5tUKb.c:1: missing_return: Arriving at the end of a function without returning a value.


Version-Release number of selected component (if applicable):
systemtap-1.8-7.el6


How reproducible:
easily


Steps to Reproduce:
1. printf "providers xxx { };\n" > xxx
2. dtrace -G -k -s xxx
3. gcc -c -Wall /tmp/tmpXXXXXX.c


Actual results:
$ printf "providers xxx { };" > xxx
$ dtrace -G -k -s xxx
header: /tmp/tmp_hnRff.h
source: /tmp/tmpXTWPUV.c

$ gcc -c -Wall /tmp/tmpXTWPUV.c
/tmp/tmpXTWPUV.c:1: warning: return type defaults to ‘int’
/tmp/tmpXTWPUV.c: In function ‘__dtrace’:
/tmp/tmpXTWPUV.c:1: warning: control reaches end of non-void function
/tmp/tmpXTWPUV.c: At top level:
/tmp/tmpXTWPUV.c:1: warning: ‘__dtrace’ defined but not used