diff options
Diffstat (limited to 'lib/warn-on-use.h')
| -rw-r--r-- | lib/warn-on-use.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/warn-on-use.h b/lib/warn-on-use.h index 8f4d40dcbeb..701013a07f4 100644 --- a/lib/warn-on-use.h +++ b/lib/warn-on-use.h @@ -32,6 +32,10 @@ _GL_WARN_ON_USE_ATTRIBUTE is for functions with 'static' or 'inline' linkage. + _GL_WARN_ON_USE should not be used more than once for a given function + in a given compilation unit (because this may generate a warning even + if the function is never called). + However, one of the reasons that a function is a portability trap is if it has the wrong signature. Declaring FUNCTION with a different signature in C is a compilation error, so this macro must use the |