Bug: https://bugs.gentoo.org/897870
From: Brahmajit Das <brahmajit.xyz@gmail.com>
Date: Tue, 12 Sep 2023 17:32:42 +0000
Subject: [PATCH] Fix incompatible integer to pointer conversion on musl

musl libc only supports XSI-compliant version of strerror_r. Hence we
need to check if __GLIBC__ is defined or not.

Also it's incorrectly assumed to use a differnt version of gethostbyname_r than
that's available with glibc or musl libc. Without the extra !defined(__GLIBC__)
the condition goes straight to the following section of the code
```
#elif defined(HAVE_GETHOSTBYNAME_R)
  hostent = gethostbyname_r(addr, hostent, tmpbuf, tmplen, &soap->errnum);
#elif defined(VXWORKS)
```
Which is not the correct implementation of gethostbyname_r present.

Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
--- a/gsoap/stdsoap2.c
+++ b/gsoap/stdsoap2.c
@@ -23145,7 +23145,7 @@ soap_strerror(struct soap *soap)
   {
 #ifndef WIN32
 # ifdef HAVE_STRERROR_R
-#  if !defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && ((!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)))
+#  if !defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && ((!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600))) || !defined(__GLIBC__)
     err = strerror_r(err, soap->msgbuf, sizeof(soap->msgbuf)); /* XSI-compliant */
     if (err != 0)
       soap_strcpy(soap->msgbuf, sizeof(soap->msgbuf), "unknown error");
--- a/gsoap/stdsoap2.cpp
+++ b/gsoap/stdsoap2.cpp
@@ -5457,7 +5457,7 @@ tcp_gethostbyname(struct soap *soap, const char *addr, struct hostent *hostent,
 {
 #if (defined(_AIX43) || defined(TRU64) || defined(HP_UX)) && defined(HAVE_GETHOSTBYNAME_R)
   struct hostent_data ht_data;
-#elif (!defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 || defined(__ANDROID__) || defined(FREEBSD) || defined(__FreeBSD__)) && defined(HAVE_GETHOSTBYNAME_R)
+#elif (!defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 || defined(__ANDROID__) || defined(FREEBSD) || defined(__FreeBSD__)) && defined(HAVE_GETHOSTBYNAME_R) || !defined(__GLIBC__)
   int r;
   char *tmpbuf = soap->tmpbuf;
   size_t tmplen = sizeof(soap->tmpbuf);
@@ -5490,7 +5490,7 @@ tcp_gethostbyname(struct soap *soap, const char *addr, struct hostent *hostent,
     hostent = NULL;
     soap->errnum = h_errno;
   }
-#elif (!defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 || defined(__ANDROID__) || defined(FREEBSD) || defined(__FreeBSD__)) && !defined(SUN_OS) && !defined(__QNX__) && !defined(QNX) && defined(HAVE_GETHOSTBYNAME_R)
+#elif (!defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600 || defined(__ANDROID__) || defined(FREEBSD) || defined(__FreeBSD__))  || !defined(__GLIBC__) && !defined(SUN_OS) && !defined(__QNX__) && !defined(QNX) && defined(HAVE_GETHOSTBYNAME_R)
   while ((r = gethostbyname_r(addr, hostent, tmpbuf, tmplen, &hostent, &soap->errnum)) < 0)
   {
     if (tmpbuf != soap->tmpbuf)
@@ -23145,7 +23145,7 @@ soap_strerror(struct soap *soap)
   {
 #ifndef WIN32
 # ifdef HAVE_STRERROR_R
-#  if !defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && ((!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)))
+#  if !defined(_GNU_SOURCE) || (!(~_GNU_SOURCE+1) && ((!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600))) || !defined(__GLIBC__)
     err = strerror_r(err, soap->msgbuf, sizeof(soap->msgbuf)); /* XSI-compliant */
     if (err != 0)
       soap_strcpy(soap->msgbuf, sizeof(soap->msgbuf), "unknown error");