diff options
Diffstat (limited to 'man3/stdarg.3')
| -rw-r--r-- | man3/stdarg.3 | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/man3/stdarg.3 b/man3/stdarg.3 index fd9e32a5e5..08245eb8b6 100644 --- a/man3/stdarg.3 +++ b/man3/stdarg.3 @@ -157,23 +157,23 @@ An obvious implementation would have a be a pointer to the stack frame of the variadic function. In such a setup (by far the most common) there seems nothing against an assignment -.RS +.in +4n .nf - va_list aq = ap; +va_list aq = ap; .fi -.RE +.in Unfortunately, there are also systems that make it an array of pointers (of length 1), and there one needs -.RS +.in +4n .nf - va_list aq; - *aq = *ap; +va_list aq; +*aq = *ap; .fi -.RE +.in Finally, on systems where parameters are passed in registers, it may be necessary for .BR va_start () @@ -187,16 +187,16 @@ can free the allocated memory again. To accommodate this situation, C99 adds a macro .BR va_copy (), so that the above assignment can be replaced by -.RS +.in +4n .nf - va_list aq; - va_copy(aq, ap); - ... - va_end(aq); +va_list aq; +va_copy(aq, ap); +... +va_end(aq); .fi -.RE +.in Each invocation of .BR va_copy () must be matched by a corresponding invocation of @@ -274,7 +274,6 @@ The function .I foo takes a string of format characters and prints out the argument associated with each format character based on the type. -.RS .nf #include <stdio.h> @@ -308,4 +307,3 @@ foo(char *fmt, ...) va_end(ap); } .fi -.RE |