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Die on -D=foo, when parsing options - we can't let someone define (nil).

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MFC after:	3 days
This commit is contained in:
Juli Mallett 2002-09-04 01:12:39 +00:00
parent d87e0e8e23
commit c624d24df3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=102917
1 changed files with 2 additions and 0 deletions
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2
usr.bin/m4/main.c
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@ -204,6 +204,8 @@ main(int argc, char *argv[])
for (p = optarg; *p; p++)
if (*p == '=')
break;
if (p == optarg)
errx(1, "null variable cannot be defined");
if (*p)
*p++ = EOS;
dodefine(optarg, p);