Assert kept content in the update-error test, not just size (#176 follow-up)

44_local-update-errormask checked only keep.dat's size (>= 1024). The good
body carries a distinctive KEEP marker that nothing asserted, so a same-size
wrong-content overwrite would still pass. Also assert the content matches
^KEEP and lacks the 403 error body, so the test discriminates the fix from
an equal-size clobber the size check alone misses.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Signed-off-by: Xavier Roche <roche@httrack.com>

src/htsglobal.h

@@ -355,8 +355,11 @@ typedef __int64 LLint;
 typedef __int64 TStamp;
 
 #define LLintP "%I64d"
+/* x32/ILP32 sets __x86_64__ but long is 32-bit; exclude it so LLint stays
+ * 64-bit. */
 #elif (defined(_LP64) || defined(__x86_64__) || defined(__powerpc64__) ||      \
-       defined(__64BIT__))
+       defined(__64BIT__)) &&                                                  \
+    !defined(__ILP32__)
 
 typedef long int LLint;
 
@@ -373,6 +376,10 @@ typedef long long int TStamp;
 
 #endif /* HTS_LONGLONG */
 
+/* Claiming long-long support must yield a real 64-bit LLint (x32 regressed:
+   __x86_64__ set but long is 32-bit). Compile-time trip, portable to C90. */
+typedef char hts_assert_llint_is_64bit[sizeof(LLint) == 8 ? 1 : -1];
+
 #else
 typedef int LLint;
 

tests/44_local-update-errormask.test

@@ -8,4 +8,6 @@ set -euo pipefail
 bash "$top_srcdir/tests/local-crawl.sh" --rerun \
     --found 'errmask/keep.dat' \
     --file-min-bytes 'errmask/keep.dat' 1024 \
+    --file-matches 'errmask/keep.dat' '^KEEP' \
+    --file-not-matches 'errmask/keep.dat' 'error 403' \
     httrack 'BASEURL/errmask/index.html'