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* lib/autoconf/c.m4 (AC_C_CONST): Don't used shadowed vars, to

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pacify insanely picky compilers.  Problem reported by Eric Blake.
This commit is contained in:
Paul Eggert 2006-08-22 20:09:51 +00:00
parent c19c2d5a27
commit 6e0e4d438b
2 changed files with 11 additions and 8 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2006-08-22 Paul Eggert <eggert@cs.ucla.edu>
* lib/autoconf/c.m4 (AC_C_CONST): Don't used shadowed vars, to
pacify insanely picky compilers. Problem reported by Eric Blake.
* doc/autoconf.texi (Posix Variants): INTERACTIVE Unix is no
longer supported by Sun.

16
lib/autoconf/c.m4
View File

@ -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],