53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
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/* Spurious uninitialized variable warnings, case 2.
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Taken from cpphash.c (macroexpand) */
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/* { dg-do compile } */
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/* { dg-options "-O -Wuninitialized" } */
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struct definition
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{
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int nargs;
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int rest_args;
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};
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struct cpp_reader;
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enum cpp_token
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{
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CPP_EOF, CPP_POP, CPP_COMMA, CPP_RPAREN
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};
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extern enum cpp_token macarg (struct cpp_reader *, int);
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void
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macroexpand (struct cpp_reader *pfile, struct definition *defn)
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{
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int nargs = defn->nargs;
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if (nargs >= 0)
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{
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enum cpp_token token; /* { dg-bogus "token" "uninitialized variable warning" { xfail *-*-* } } */
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int i, rest_args;
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i = 0;
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rest_args = 0;
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do
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{
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if (rest_args)
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continue;
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if (i < nargs || (nargs == 0 && i == 0))
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{
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/* if we are working on last arg which absorbs rest of args... */
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if (i == nargs - 1 && defn->rest_args)
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rest_args = 1;
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token = macarg (pfile, rest_args);
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}
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else
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token = macarg (pfile, 0);
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if (token == CPP_EOF || token == CPP_POP)
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return;
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i++;
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}
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while (token == CPP_COMMA);
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}
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}
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