dtimezone(): Explain abs(3) is undefined on INT_MIN.

That's why a negative int is flipped over into unsigned by assuming
two's complement.

diff --git a/sbr/dtime.c b/sbr/dtime.c
index 3a51d87..b3ca012 100644 (file)
--- a/sbr/dtime.c
+++ b/sbr/dtime.c
@@ -291,7 +291,7 @@ char *dtimezone(int offset, int flags)
     unsigned os, hours, mins;
 
     pos = offset >= 0;
     unsigned os, hours, mins;
 
     pos = offset >= 0;

-    os = pos ? offset : ~offset + 1;
+    os = pos ? offset : ~offset + 1; /* abs(3) undefined on INT_MIN. */

     hours = os / 60;
     mins = os % 60;
 
     hours = os / 60;
     mins = os % 60;