[Bug-wget] wget_css_fuzzer.c: error: lvalue required as left operand of assignment

[Jeffrey Walton]

Hi Everyone,

I'm working on Solaris 11.3 i86pc. I'm building Wget 1.20.1 from sources.

'make check' is dying at:

gcc -std=gnu11 -DHAVE_CONFIG_H -I. -I../src  -I../src -I. -I../lib
-I../lib -DSRCDIR=\"/export/home/jwalton/Build-Scripts/wget-1.20.1/fuzz\"
-DTEST_RUN -I/usr/local/include -DNDEBUG -D_REENTRANT
-Wno-unused-parameter -Wno-pedantic -I/usr/local/include
-I/usr/local/include   -I/usr/local/include   -I/usr/local/include
-DNDEBUG -g2 -O2 -march=native -fPIC -MT wget_css_fuzzer.o -MD -MP -MF
.deps/wget_css_fuzzer.Tpo -c -o wget_css_fuzzer.o wget_css_fuzzer.c
wget_css_fuzzer.c: In function 'LLVMFuzzerTestOneInput':
wget_css_fuzzer.c:95:9: error: lvalue required as left operand of assignment
  stderr = fopen("/dev/null", "w");
         ^
wget_css_fuzzer.c:106:9: error: lvalue required as left operand of assignment
  stderr = bak;
         ^
gmake[3]: *** [wget_css_fuzzer.o] Error 1
gmake[3]: Leaving directory
`/export/home/jwalton/Build-Scripts/wget-1.20.1/fuzz'
gmake[2]: *** [check-am] Error 2
gmake[2]: Leaving directory
`/export/home/jwalton/Build-Scripts/wget-1.20.1/fuzz'
gmake[1]: *** [check-recursive] Error 1
gmake[1]: Leaving directory `/export/home/jwalton/Build-Scripts/wget-1.20.1'
gmake: *** [check] Error 2
Failed to test Wget

It looks like <stdio.h> is included in wget_css_fuzzer.c
(https://stackoverflow.com/a/47437649/608639). But I am wondering if
the "macro" requirement is the thing going sideways.

Any thoughts on a workaround?