[git] GnuPG - branch, STABLE-BRANCH-1-4, updated. gnupg-1.4.20-4-ga38dffd

[by Werner Koch]

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- Log -----------------------------------------------------------------
commit a38dffde7b19bd4881afcd87c23aac2daa5bd52a
Author: Werner Koch <wk at gnupg.org>
Date:   Fri Jan 15 15:51:37 2016 +0100

    Fix possible AIX problem with sysconf in rndunix.
    
    * cipher/rndunix.c [HAVE_STDINT_H]: Include stdint.h.
    (start_gatherer): Detect misbehaving sysconf.
    --
    
    See
    GnuPG-bug-id: 1778
    for the reason of this patch. There is no concrete bug report but this
    chnage should not harm.
    
    Signed-off-by: Werner Koch <wk at gnupg.org>

diff --git a/cipher/rndunix.c b/cipher/rndunix.c
index 72905e6..5cf2b9e 100644
--- a/cipher/rndunix.c
+++ b/cipher/rndunix.c
@@ -50,6 +50,9 @@
 #include <config.h>
 #include <stdlib.h>
 #include <stdio.h>
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
 #include <string.h>
 #include <assert.h>
 
@@ -700,12 +703,18 @@ start_gatherer( int pipefd )
     {	int nmax, n1, i;
 #ifdef _SC_OPEN_MAX
 	if( (nmax=sysconf( _SC_OPEN_MAX )) < 0 ) {
-#ifdef _POSIX_OPEN_MAX
+# ifdef _POSIX_OPEN_MAX
 	    nmax = _POSIX_OPEN_MAX;
-#else
+# else
 	    nmax = 20; /* assume a reasonable value */
-#endif
+# endif
 	}
+        /* AIX returns INT32_MAX instead of a proper value.  We assume that
+         * this is always an error and use a reasonable value.  */
+# ifdef INT32_MAX
+        if (nmax == INT32_MAX)
+          nmax = 20;
+# endif
 #else
 	nmax = 20; /* assume a reasonable value */
 #endif

-----------------------------------------------------------------------

Summary of changes:
 cipher/rndunix.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)


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