[LLVMbugs] [Bug 2150] New: No warning when reaching end of a non-void function.

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Thu Mar 13 07:13:54 PDT 2008


           Summary: No warning when reaching end of a non-void function.
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: richard.smith at antixlabs.com
                CC: llvmbugs at cs.uiuc.edu

$ cat foo.c
int foo() {}
$ gcc foo.c -c -Wall
foo.c: In function ‘foo’:
foo.c:1: warning: control reaches end of non-void function
$ llvm-gcc foo.c -c -Wall

In gcc that warning comes out of the tree optimisation passes, which llvm does
not use. It would be nice if it did an equivalent check, though.

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