[LLVMbugs] [Bug 2280] New: clang: no output should be produced when errors occurs

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2280

           Summary: clang: no output should be produced when errors occurs
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: LLVM Codegen
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


When an error occurs, clang still creates the output file, which is a problem
because make will believe that compiling succeeded the 2nd time I run it.

$ make others.o
source='../../../trunk/clamscan/others.c' object='others.o' libtool=no \
        DEPDIR=.deps depmode=none /bin/sh ../../../trunk/config/depcomp \
        /home/edwin/llvm-svn/llvm/tools/clang/utils/ccc -DHAVE_CONFIG_H
-DCL_NOTHREADS -I. -I../../../trunk/clamscan -I..  -I../../../trunk
-I../../../trunk/shared -I../../../trunk/libclamav   -g -O2 -c
../../../trunk/clamscan/others.c
../../../trunk/clamscan/others.c
clang -emit-llvm-bc -x c -o others.o ../../../trunk/clamscan/others.c
-DHAVE_CONFIG_H -DCL_NOTHREADS -I. -I../../../trunk/clamscan -I..
-I../../../trunk -I../../../trunk/shared -I../../../trunk/libclamav
int (identifier)(char const *, short)
../../../trunk/clamscan/others.c:115:8: error: incompatible type passing 'int
*', expected '__WAIT_STATUS'
                wait(&status);
                     ^~~~~~~
1 diagnostic generated.
make: *** [others.o] Error 1

$ make others.o
make: `others.o' is up to date.

The generated file contains some functions, except the one where the failure
occured. In the end I get linker errors because of the missing function, and
make no longer tells me which file failed to compile.
A workaround is to 'make clean' each time, but I think it would be best to
delete the output file in case of an error.


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