From: Filip Kastl <fkastl@suse.cz>
Date: Mon, 15 Jun 2026 12:20:58 +0000 (+0200)
Subject: toplev: Ask for 128MB stack when compiled with ASAN [PR124206]
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7b0d9d02aff02cd04897fea15feff0c5ba01b79c;p=thirdparty%2Fgcc.git

toplev: Ask for 128MB stack when compiled with ASAN [PR124206]

64MB stack is not enough for running
gcc/testsuite/gcc.c-torture/compile/limits-exprparen.c with an
ASAN-instrumented GCC.  Ask for more stack if GCC was compiled with ASAN
instrumentation.

	PR sanitizer/124206

gcc/ChangeLog:

	* gcc.cc (driver::global_initializations): Ask for 128MB stack
	instead of just 64MB when __SANITIZE_ADDRESS__ is defined.
	* toplev.cc (toplev::main): Ditto.

Signed-off-by: Filip Kastl <fkastl@suse.cz>
---

diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index 9ef2a21745a..c7a5ac2484e 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -8517,7 +8517,11 @@ driver::global_initializations ()
 
   /* Parsing and gimplification sometimes need quite large stack.
      Increase stack size limits if possible.  */
+#ifdef __SANITIZE_ADDRESS__
+  stack_limit_increase (128 * 1024 * 1024);
+#else
   stack_limit_increase (64 * 1024 * 1024);
+#endif
 
   /* Allocate the argument vector.  */
   alloc_args ();
diff --git a/gcc/toplev.cc b/gcc/toplev.cc
index 3d4319fa328..30f5a3d0063 100644
--- a/gcc/toplev.cc
+++ b/gcc/toplev.cc
@@ -2304,7 +2304,11 @@ toplev::main (int argc, char **argv)
 {
   /* Parsing and gimplification sometimes need quite large stack.
      Increase stack size limits if possible.  */
+#ifdef __SANITIZE_ADDRESS__
+  stack_limit_increase (128 * 1024 * 1024);
+#else
   stack_limit_increase (64 * 1024 * 1024);
+#endif
 
   /* Stash a copy of the original argv before expansion
      for use by SARIF output.  */