path: root/usage.c
diff options
authorShawn O. Pearce <>2006-12-22 00:48:32 (GMT)
committerJunio C Hamano <>2006-12-22 06:59:34 (GMT)
commitfa39b6b5b11f9b580c515a7b4a8e4eb8eaa79b75 (patch)
tree1b01d4e00ef4367a922de3f7a0e553bff2266073 /usage.c
parent51dcaa9686d9ff591e9d051e6090d8529bc263a5 (diff)
Introduce a global level warn() function.
Like the existing error() function the new warn() function can be used to describe a situation that probably should not be occuring, but which the user (and Git) can continue to work around without running into too many problems. An example situation is a bad commit SHA1 found in a reflog. Attempting to read this record out of the reflog isn't really an error as we have skipped over it in the past. Signed-off-by: Shawn O. Pearce <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'usage.c')
1 files changed, 19 insertions, 0 deletions
diff --git a/usage.c b/usage.c
index 52c2e96..4dc5c77 100644
--- a/usage.c
+++ b/usage.c
@@ -29,12 +29,17 @@ static void error_builtin(const char *err, va_list params)
report("error: ", err, params);
+static void warn_builtin(const char *warn, va_list params)
+ report("warning: ", warn, params);
/* If we are in a dlopen()ed .so write to a global variable would segfault
* (ugh), so keep things static. */
static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin;
static void (*error_routine)(const char *err, va_list params) = error_builtin;
+static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
void set_usage_routine(void (*routine)(const char *err) NORETURN)
@@ -51,6 +56,11 @@ void set_error_routine(void (*routine)(const char *err, va_list params))
error_routine = routine;
+void set_warn_routine(void (*routine)(const char *warn, va_list params))
+ warn_routine = routine;
void usage(const char *err)
@@ -75,3 +85,12 @@ int error(const char *err, ...)
return -1;
+void warn(const char *warn, ...)
+ va_list params;
+ va_start(params, warn);
+ warn_routine(warn, params);
+ va_end(params);