Remove the LLONG_MAX preprocessor macro from the series.c extension as it

is apparently only C99 and later.
[forum:/forumpost/4af649419b|Forum post 4af649419b].

FossilOrigin-Name: f106bc0d21b7a815f0d23a97b6fd63c54d3f5353e965dfa550fa715e698ec6e3

1 files changed, 11 insertions, 7 deletions

diff --git a/ext/misc/series.c b/ext/misc/series.c
index abd6af7ad..3e859a8f2 100644
--- a/ext/misc/series.c
+++ b/ext/misc/series.c
@@ -103,16 +103,20 @@ SQLITE_EXTENSION_INIT1
 ** index is ix. The 0th member is given by smBase. The sequence members
 ** progress per ix increment by smStep.
 */
-static sqlite3_int64 genSeqMember(sqlite3_int64 smBase,
-                                  sqlite3_int64 smStep,
-                                  sqlite3_uint64 ix){
-  if( ix>=(sqlite3_uint64)LLONG_MAX ){
+static sqlite3_int64 genSeqMember(
+  sqlite3_int64 smBase,
+  sqlite3_int64 smStep,
+  sqlite3_uint64 ix
+){
+  static const sqlite3_uint64 mxI64 =
+      ((sqlite3_uint64)0x7fffffff)<<32 | 0xffffffff;
+  if( ix>=mxI64 ){
     /* Get ix into signed i64 range. */
-    ix -= (sqlite3_uint64)LLONG_MAX;
+    ix -= mxI64;
     /* With 2's complement ALU, this next can be 1 step, but is split into
      * 2 for UBSAN's satisfaction (and hypothetical 1's complement ALUs.) */
-    smBase += (LLONG_MAX/2) * smStep;
-    smBase += (LLONG_MAX - LLONG_MAX/2) * smStep;
+    smBase += (mxI64/2) * smStep;
+    smBase += (mxI64 - mxI64/2) * smStep;
   }
   /* Under UBSAN (or on 1's complement machines), must do this last term
    * in steps to avoid the dreaded (and harmless) signed multiply overlow. */