Fix bug in dl_strcmp, it is not always legal to access a pointer

at offset -1, the code that was here was very odd, the corrected code
was basically copied from the libsa version.

1 files changed, 11 insertions, 5 deletions

diff --git a/libexec/ld.so/powerpc/archdep.h b/libexec/ld.so/powerpc/archdep.h
index 005c3cd75d2..3e87fb34212 100644
--- a/libexec/ld.so/powerpc/archdep.h
+++ b/libexec/ld.so/powerpc/archdep.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: archdep.h,v 1.2 2000/10/01 00:54:35 rahnds Exp $ */
+/*	$OpenBSD: archdep.h,v 1.3 2000/10/19 02:44:16 drahn Exp $ */
 
 /*
  * Copyright (c) 1998 Per Fogelstrom, Opsycon AB
@@ -124,18 +124,24 @@ _dl_strcpy(char *d, const char *s)
 static inline int
 _dl_strncmp(const char *d, const char *s, int c)
 {
-	while(c-- && *d && *d++ == *s++) {};
+	while(c-- && *d && *d == *s) {
+		d++;
+		s++;
+	};
 	if(c < 0) {
 		return(0);
 	}
-	return(d[-1] - s[-1]);
+	return(*d - *s);
 }
  
 static inline int
 _dl_strcmp(const char *d, const char *s)
 {
-	while(*d && *d++ == *s++) {};
-	return(d[-1] - s[-1]);
+	while(*d && *d == *s) {
+		d++;
+		s++;
+	}
+	return(*d - *s);
 }
  
 static inline const char *