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