utils-std

commit: d1ec7315a915f5316e669b7abe4cb827ced28469
parent b51da2a6cc5143174522ba123e8d05012d9d7355
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Thu, 28 Mar 2024 18:56:56 +0100

lib/iso_parse: assert(errno == 0)

Diffstat:
M
lib/iso_parse.c
8
++++++--

1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/lib/iso_parse.c b/lib/iso_parse.c
@@ -6,6 +6,7 @@
 #define _XOPEN_SOURCE 700       // strptime (NetBSD)
 #define _POSIX_C_SOURCE 200809L // st_atim/st_mtim
 
+#include <assert.h>
 #include <ctype.h>  /* isdigit */
 #include <errno.h>  /* errno */
 #include <stdio.h>  /* perror, sscanf */
@@ -25,8 +26,8 @@ iso_parse(char *arg, char **errstr)
 	if(arg[0] == '@')
 	{
 		arg++;
-		errno = 0;
 
+		assert(errno == 0);
 		time.tv_sec = strtol(arg, NULL, 10);
 		if(errno != 0)
 		{
@@ -68,7 +69,7 @@ iso_parse(char *arg, char **errstr)
 
 		if(s[0] == ',') s[0] = '.';
 
-		errno = 0;
+		assert(errno == 0);
 		if(sscanf(s, "%10lf%n", &fraction, &parsed) < 1)
 		{
 			if(errno == 0)
@@ -78,6 +79,7 @@ iso_parse(char *arg, char **errstr)
 			else
 			{
 				*errstr = strerror(errno);
+				errno   = 0;
 			}
 			return time;
 		}
@@ -99,10 +101,12 @@ iso_parse(char *arg, char **errstr)
 		tm.tm_zone   = "UTC";
 	}
 
+	assert(errno == 0);
 	time.tv_sec = mktime(&tm);
 	if(time.tv_sec == (time_t)-1)
 	{
 		*errstr = strerror(errno);
+		errno   = 0;
 		return time;
 	}