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examples: beware of strnlen portability issues

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One function missing on Solaris 10 Sparc:

     CCLD     examples/c/bistromathic/bistromathic
    Undefined                       first referenced
    symbol                             in file
    strnlen                             examples/c/bistromathic/bistromathic-parse.o
    ld: fatal: symbol referencing errors. No output written to examples/c/bistromathic/bistromathic

Reported by Dagobert Michelsen.
https://lists.gnu.org/r/bug-bison/2020-05/msg00048.html

* examples/c/bistromathic/parse.y (xstrndup): Don't use strnlen.
xstrndup is assembled from gnulib's xstrndup, strndup and strnlen...
This commit is contained in:
Akim Demaille
2020-05-04 06:37:59 +02:00
parent 6135fdc152
commit ce27796b74
1 changed files with 3 additions and 1 deletions
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4
examples/c/bistromathic/parse.y
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@@ -400,7 +400,9 @@ void yyerror (YYLTYPE *loc, char const *format, ...)
static char *
xstrndup (const char *string, size_t n)
{
size_t len = strnlen (string, n);
// len = strnlen (string, n), portably.
const char *end = memchr (string, '\0', n);
size_t len = end ? (size_t) (end - string) : n;
char *new = malloc (len + 1);
assert (new);
new[len] = '\0';