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examples: don't promote unchecked function calls

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* etc/bench.pl.in, examples/c/bistromathic/parse.y,
* examples/c/calc/calc.y, examples/c/pushcalc/calc.y: Check scanf's
return value.
* doc/bison.texi: Likewise, but only for the second example, to avoid
cluttering the very simple case.
This commit is contained in:
Akim Demaille
2020-05-12 19:03:29 +02:00
parent ad921890c1
commit 4619b32dc0
6 changed files with 17 additions and 7 deletions
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3
etc/bench.pl.in
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@@ -498,7 +498,8 @@ yylex (void)
case '5': case '6': case '7': case '8': case '9':
{
int nchars = 0;
sscanf (input - 1, "%d%n", &yylval.NUM, &nchars);
int n = sscanf (input - 1, "%d%n", &yylval.NUM, &nchars);
assert (n == 1);
input += nchars - 1;
return NUM;
}