Revision: 440
http://assorted.svn.sourceforge.net/assorted/?rev=440&view=rev
Author: yangzhang
Date: 2008-02-14 18:45:03 -0800 (Thu, 14 Feb 2008)
Log Message:
-----------
added const test
Added Paths:
-----------
sandbox/trunk/src/c/consts.c
Added: sandbox/trunk/src/c/consts.c
===================================================================
--- sandbox/trunk/src/c/consts.c (rev 0)
+++ sandbox/trunk/src/c/consts.c 2008-02-15 02:45:03 UTC (rev 440)
@@ -0,0 +1,66 @@
+// Exploring const-ness in C. It's actually the same in C++ (modulo C++-only
+// concepts like classes). Obvious results.
+
+struct S
+{
+ int x;
+ char *s;
+ const char *c;
+};
+
+int
+main()
+{
+ {
+ const char* s = "hello world";
+
+ // Compile error on this.
+ // s[0] = 'H';
+ }
+ {
+ const struct S *p = 0;
+
+ // Compile error on this.
+ // p->x = 0;
+
+ // No compile error on this.
+ p->s[0] = '\0';
+
+ // Compile error on this.
+ // p->c[0] = '\0';
+
+ // No compile error on this.
+ p = 0;
+ }
+ {
+ struct S * const p = 0;
+
+ // No compile error on this.
+ p->x = 0;
+
+ // No compile error on this.
+ p->s[0] = '\0';
+
+ // Compile error on this.
+ // p->c[0] = '\0';
+
+ // Compile error on this.
+ // p = 0;
+ }
+ {
+ const struct S * const p = 0;
+
+ // Compile error on this.
+ // p->x = 0;
+
+ // No compile error on this.
+ p->s[0] = '\0';
+
+ // Compile error on this.
+ // p->c[0] = '\0';
+
+ // Compile error on this.
+ // p = 0;
+ }
+ return 0;
+}
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