fs: explicitly compare isatty() result

jow- · jow- · commit f4591667531d · 2023-07-25T14:02:02.000+02:00
Reportedly, automatic conversion of the `isatty()` int result value to a bool does not work correctly on PPC. Explicitly compare the result value with `1` to infer the boolean result value. Fixes: #165 Signed-off-by: Jo-Philipp Wich <jo@mein.io>
diff --git a/lib/fs.c b/lib/fs.c
@@ -838,7 +838,7 @@ uc_fs_isatty(uc_vm_t *vm, size_t nargs)
 	if (fd == -1)
 		err_return(errno);
 
-	return ucv_boolean_new(isatty(fd));
+	return ucv_boolean_new(isatty(fd) == 1);
 }
 
 /**

Original file line number	Diff line number	Diff line change
`@@ -838,7 +838,7 @@ uc_fs_isatty(uc_vm_t *vm, size_t nargs)`
`838`	`838`	`if (fd == -1)`
`839`	`839`	`err_return(errno);`
`840`	`840`
`841`		`- return ucv_boolean_new(isatty(fd));`
	`841`	`+ return ucv_boolean_new(isatty(fd) == 1);`
`842`	`842`	`}`
`843`	`843`
`844`	`844`	`/**`