Show correct line for unused symbol warning for global symbols

Fixes #252.

Author: Zeex

source/compiler/sc1.c

@@ -4808,11 +4808,9 @@ static int testsymbols(symbol *root,int level,int testlabs,int testconst)
       if (sym->parent!=NULL)
         break;                      /* hierarchical data type */
       if ((sym->usage & (uWRITTEN | uREAD | uSTOCK | uPUBLIC))==0) {
-        if (testconst)
-          errorset(sSETPOS,sym->lnumber);
+        errorset(sSETPOS,sym->lnumber);
         error(203,sym->name,sym->lnumber);  /* symbol isn't used (and not stock) */
-        if (testconst)
-          errorset(sSETPOS,0);
+        errorset(sSETPOS,0);
       } else if ((sym->usage & (uREAD | uSTOCK | uPUBLIC))==0) {
         errorset(sSETPOS,sym->lnumber);
         error(204,sym->name);       /* value assigned to symbol is never used */

source/compiler/tests/CMakeLists.txt

@@ -33,6 +33,13 @@ set_tests_properties(reset_errline_gh_230 PROPERTIES PASS_REGULAR_EXPRESSION "\
 .*\\.pwn\\(4\\) : warning 204: symbol is assigned a value that is never used: \\\"x\\\"\
 ")
 
+add_compiler_test(unused_symbol_line_gh_252 ${CMAKE_CURRENT_SOURCE_DIR}/unused_symbol_line_gh_252.pwn)
+set_tests_properties(unused_symbol_line_gh_252 PROPERTIES PASS_REGULAR_EXPRESSION "\
+.*\\.pwn\\(4\\) : warning 203: symbol is never used: \\\"y\\\"
+.*\\.pwn\\(8\\) : warning 203: symbol is never used: \\\"z\\\"
+.*\\.pwn\\(1\\) : warning 203: symbol is never used: \\\"x\\\"
+")
+
 # Crashers
 #
 # These tests simply check that the compiler doesn't crash.

source/compiler/tests/unused_symbol_line_gh_252.pwn

@@ -0,0 +1,9 @@
+new x;
+
+main() {
+	new y;
+	f(0);
+}
+
+f(z) {
+}