Eric Blake <ebb9@xxxxxxx> writes:
> I don't know if this is worth fixing upstream in autoconf,
Just barely. I installed this:
2006-08-22 Paul Eggert <eggert@xxxxxxxxxxx>
* lib/autoconf/c.m4 (AC_C_CONST): Don't used shadowed vars, to
pacify insanely picky compilers. Problem reported by Eric Blake.
--- lib/autoconf/c.m4 15 Aug 2006 16:24:42 -0000 1.232
+++ lib/autoconf/c.m4 22 Aug 2006 20:08:44 -0000
@@ -1437,10 +1437,10 @@ AC_DEFUN([AC_C_CONST],
#ifndef __cplusplus
/* Ultrix mips cc rejects this. */
typedef int charset[2];
- const charset x;
+ const charset cs;
/* SunOS 4.1.1 cc rejects this. */
- char const *const *ccp;
- char **p;
+ char const *const *pcpcc;
+ char **ppc;
/* NEC SVR4.0.2 mips cc rejects this. */
struct point {int x, y;};
static struct point const zero = {0,0};
@@ -1449,11 +1449,11 @@ AC_DEFUN([AC_C_CONST],
an arm of an if-expression whose if-part is not a constant
expression */
const char *g = "string";
- ccp = &g + (g ? g-g : 0);
+ pcpcc = &g + (g ? g-g : 0);
/* HPUX 7.0 cc rejects these. */
- ++ccp;
- p = (char**) ccp;
- ccp = (char const *const *) p;
+ ++pcpcc;
+ ppc = (char**) pcpcc;
+ pcpcc = (char const *const *) ppc;
{ /* SCO 3.2v4 cc rejects this. */
char *t;
char const *s = 0 ? (char *) 0 : (char const *) 0;
@@ -1480,7 +1480,7 @@ AC_DEFUN([AC_C_CONST],
const int foo = 10;
if (!foo) return 0;
}
- return !x[0] && !zero.x;
+ return !cs[0] && !zero.x;
#endif
]])],
[ac_cv_c_const=yes],
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