[Flang] NFC: Update test to work on Mac (#144253)

kiranchandramohan · web-flow · commit dfb14b65bc0a · 2025-06-16T16:55:40.000+01:00
`%flang` expands to `flang -isysroot &lt;SDK location&gt;` in Mac and probably
other OS as well. `fc1` is only accepted as the first argument and hence
in this case it fails.

Use the `%flang_fc1` option to correctly expand to `flang -fc1 -isysroot
&lt;SDK location&gt;`.
diff --git a/flang/test/Preprocessing/bug518.F b/flang/test/Preprocessing/bug518.F
@@ -1,4 +1,4 @@
-! RUN: %flang -fc1 -fdebug-unparse %s 2>&1 | FileCheck %s
+! RUN: %flang_fc1 -fdebug-unparse %s 2>&1 | FileCheck %s
 ! CHECK: k=1_4
                         k=                                            1_99999999
      &4

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-! RUN: %flang -fc1 -fdebug-unparse %s 2>&1 \| FileCheck %s`
	`1`	`+! RUN: %flang_fc1 -fdebug-unparse %s 2>&1 \| FileCheck %s`
`2`	`2`	`! CHECK: k=1_4`
`3`	`3`	`k= 1_99999999`
`4`	`4`	`&4`