FFI with C: fix line offset in gcc error reports

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/src/ffi/c.nit b/src/ffi/c.nit
index 6fba61a..8ae08b9 100644 (file)
--- a/src/ffi/c.nit
+++ b/src/ffi/c.nit
@@ -68,7 +68,7 @@ redef class AExternCodeBlock
 end
 
 redef class Location
-       fun as_line_pragma: String do return "#line {line_start} \"{file.filename}\"\n"
+       fun as_line_pragma: String do return "#line {line_start-1} \"{file.filename}\"\n"
 end
 
 redef class MModule