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ca63c4409b
The patch fixes the following errors and warnings raised by the
compilation of libxml2 with the combination of GCC 14.x and uClibc.
encoding.c: In function ‘xmlEncInputChunk’:
encoding.c:2209:32: warning: comparison between pointer and integer
2209 | else if (handler->iconv_in != NULL) {
| ^~
encoding.c: In function ‘xmlEncOutputChunk’:
encoding.c:2269:33: warning: comparison between pointer and integer
2269 | else if (handler->iconv_out != NULL) {
| ^~
encoding.c: In function ‘xmlCharEncCloseFunc’:
encoding.c:2681:29: warning: comparison between pointer and integer
2681 | if ((handler->iconv_out != NULL) || (handler->iconv_in != NULL)) {
| ^~
encoding.c:2681:60: warning: comparison between pointer and integer
2681 | if ((handler->iconv_out != NULL) || (handler->iconv_in != NULL)) {
| ^~
encoding.c:2683:32: warning: comparison between pointer and integer
2683 | if (handler->iconv_out != NULL) {
| ^~
encoding.c:2686:32: error: assignment to ‘iconv_t’ {aka ‘long int’} from ‘void *’ makes integer from pointer without a cast [-Wint-conversion]
2686 | handler->iconv_out = NULL;
| ^
encoding.c:2688:31: warning: comparison between pointer and integer
2688 | if (handler->iconv_in != NULL) {
| ^~
encoding.c:2691:31: error: assignment to ‘iconv_t’ {aka ‘long int’} from ‘void *’ makes integer from pointer without a cast [-Wint-conversion]
2691 | handler->iconv_in = NULL;
| ^
make[4]: *** [Makefile:1147: libxml2_la-encoding.lo] Error 1
This code has been in libxml2 pretty much forever: it was partially
introduced in version 2.1.0: 496a1cf59284 ("496a1cf59284 revamped the
encoding support, added iconv support, so now libxml if") and
partially in version 2.2.3: 87b953957305 ("Large sync between my W3C
base and Gnome's one:"). And the first time Buildroot packaged
libxml2, it was version 2.6.29.
However, both glibc and musl define iconv_t as "void *", which meant
the libxml2 code was not problematic. uClibc defines iconv_t as
"long", which generated only a warning... until GCC got updated to GCC
14.x, which turned this warning into an error, causing the build
failure.
Fixes:
http://autobuild.buildroot.net/results/fd4f8d2e8d8ee68d9e18f761ceff350188e55a87/
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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