From c011ab810549394e407de215554236dfae9f8a26 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Sat, 12 Apr 2008 04:06:45 +0000 Subject: deconstify input buffer for iconv() Unfortunately, the function iconv() wants a non-const input buffer. In this context, we only have a const pointer, which emits a correct gcc warning. Work around this ugliness with an union-deconst hack. This is optimized away in the binary. git-svn-id: https://svn.musicpd.org/mpd/trunk@7229 09075e82-0dd4-0310-85a5-a0d7c8717e4f --- src/charConv.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/charConv.c b/src/charConv.c index c9a47fe1d..26e4bddeb 100644 --- a/src/charConv.c +++ b/src/charConv.c @@ -93,6 +93,22 @@ int setCharSetConversion(const char *to, const char *from) #endif } +#ifdef HAVE_ICONV +static inline size_t deconst_iconv(iconv_t cd, + const char **inbuf, size_t *inbytesleft, + char **outbuf, size_t *outbytesleft) +{ + union { + const char **a; + char **b; + } deconst; + + deconst.a = inbuf; + + return iconv(cd, deconst.b, inbytesleft, outbuf, outbytesleft); +} +#endif + char *char_conv_str(char *dest, const char *string) { if (!char_conv_to) @@ -117,8 +133,8 @@ char *char_conv_str(char *dest, const char *string) bufferPtr = buffer; outleft = BUFFER_SIZE; err = - iconv(char_conv_iconv, &string, &inleft, &bufferPtr, - &outleft); + deconst_iconv(char_conv_iconv, &string, &inleft, + &bufferPtr, &outleft); if (outleft == BUFFER_SIZE || (err == (size_t)-1L && errno != E2BIG)) { return NULL; -- cgit v1.2.3