make assertion failure with target-specific variables

[Manoj Srivastava]

Hi,

        This may be a repeat for some of the people addressed by this
 message. I think I may have sent it out with the wrong addresses
 (that should teach me to try and deal with my packages at 3:30am)

        [Please retain a CC to address@hidden, so
        that the Debian Bug tracking sysem can record the conversation
        on this issue.]

make 3.79.1 fails with an assertion error when a target-specific
variable append is combined with setting the variable on the make
command line.

        The following is a self explanatory minimal case.

======================================================================
__> cat Makefile 
CFLAGS=-g -O2
all: foo.o
foo.c:
        touch foo.c

foo.o: CFLAGS += -Dsomething

__> make
touch foo.c
cc -g -O2 -Dsomething   -c -o foo.o foo.c
__> rm -f foo*
__> make CFLAGS=-O
touch foo.c
make: expand.c:489: allocated_variable_append: Assertion 
`current_variable_set_list->next != 0' failed.
Aborted
__> 
======================================================================

        manoj
-- 
 For certain people, after fifty, litigation takes the place of
 sex. Gore Vidal
Manoj Srivastava   <address@hidden>  <http://www.debian.org/%7Esrivasta/>
1024R/C7261095 print CB D9 F4 12 68 07 E4 05  CC 2D 27 12 1D F5 E8 6E
1024D/BF24424C print 4966 F272 D093 B493 410B  924B 21BA DABB BF24 424C