libgfortran: Fix compilation of gf_vsnprintf

The fallback function (gf_vsnprintf) to provide a vsnprintf function
if the system library doesn't have one would not compile due to the
variable name for the string's destination buffer not being updated
after the refactor in 2018 in edaaef601d0d6d263fba87b42d6d04c99dd23dba.

This updates the internal logic of gf_vsnprintf to now use the str
variable defined in the function signature.

libgfortran/ChangeLog:

2024-04-04  Ian McInerney  <i.mcinerney17@imperial.ac.uk>

	* runtime/error.c (gf_vsnprintf): Fix compilation

Signed-off-by: Ian McInerney <i.mcinerney17@imperial.ac.uk>

diff --git a/libgfortran/runtime/error.c b/libgfortran/runtime/error.c
index e840f5395992780cdd615a8cf1f7cad35fb573e3..044298294d8254086b377c8d2d4e073141239020 100644 (file)
--- a/libgfortran/runtime/error.c
+++ b/libgfortran/runtime/error.c
@@ -142,15 +142,15 @@ gf_vsnprintf (char *str, size_t size, const char *format, va_list ap)
 {
   int written;
 
-  written = vsprintf(buffer, format, ap);
+  written = vsprintf(str, format, ap);
 
   if (written >= size - 1)
     {
-      /* The error message was longer than our buffer.  Ouch.  Because
+      /* The error message was longer than the string size.  Ouch.  Because
         we may have messed up things badly, report the error and
         quit.  */
-#define ERROR_MESSAGE "Internal error: buffer overrun in gf_vsnprintf()\n"
-      write (STDERR_FILENO, buffer, size - 1);
+#define ERROR_MESSAGE "Internal error: string overrun in gf_vsnprintf()\n"
+      write (STDERR_FILENO, str, size - 1);
       write (STDERR_FILENO, ERROR_MESSAGE, strlen (ERROR_MESSAGE));
       sys_abort ();
 #undef ERROR_MESSAGE