From: Martin Jambor <mjambor@suse.cz>
Date: Thu, 26 Jun 2025 09:25:20 +0000 (+0200)
Subject: fortran: Avoid freeing uninitialized value
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=bf6078d2aaee8b240b7425b9788d8038cd45c8f3;p=thirdparty%2Fgcc.git

fortran: Avoid freeing uninitialized value

When compiling fortran/match.cc, clang emits a warning

  fortran/match.cc:5301:7: warning: variable 'p' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]

which looks accurate, so this patch adds an initialization of p to
avoid the use.

gcc/fortran/ChangeLog:

2025-06-23  Martin Jambor  <mjambor@suse.cz>

	* match.cc (gfc_match_nullify): Initialize p to NULL;
---

diff --git a/gcc/fortran/match.cc b/gcc/fortran/match.cc
index aa0b04afd56..8355a390ee0 100644
--- a/gcc/fortran/match.cc
+++ b/gcc/fortran/match.cc
@@ -5293,7 +5293,7 @@ match
 gfc_match_nullify (void)
 {
   gfc_code *tail;
-  gfc_expr *e, *p;
+  gfc_expr *e, *p = NULL;
   match m;
 
   tail = NULL;