[gcc r15-4980] libstdc++: Move include guards to start of headers

[Jonathan Wakely]

https://gcc.gnu.org/g:6a050a3e650c7718c0a8cc948cd57706795f9805

commit r15-4980-g6a050a3e650c7718c0a8cc948cd57706795f9805
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Nov 5 12:54:32 2024 +0000

    libstdc++: Move include guards to start of headers
    
    libstdc++-v3/ChangeLog:
    
            * include/c_compatibility/complex.h (_GLIBCXX_COMPLEX_H): Move
            include guard to start of the header.
            * include/c_global/ctgmath (_GLIBCXX_CTGMATH): Likewise.

Diff:
---
 libstdc++-v3/include/c_compatibility/complex.h | 6 +++---
 libstdc++-v3/include/c_global/ctgmath          | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/libstdc++-v3/include/c_compatibility/complex.h b/libstdc++-v3/include/c_compatibility/complex.h
index 605d1f30e06e..a3102d9fce30 100644
--- a/libstdc++-v3/include/c_compatibility/complex.h
+++ b/libstdc++-v3/include/c_compatibility/complex.h
@@ -26,6 +26,9 @@
  *  This is a Standard C++ Library header.
  */
 
+#ifndef _GLIBCXX_COMPLEX_H
+#define _GLIBCXX_COMPLEX_H 1
+
 #include <bits/c++config.h>
 
 #if __cplusplus >= 201103L
@@ -42,7 +45,4 @@
 # endif
 #endif
 
-#ifndef _GLIBCXX_COMPLEX_H
-#define _GLIBCXX_COMPLEX_H 1
-
 #endif
diff --git a/libstdc++-v3/include/c_global/ctgmath b/libstdc++-v3/include/c_global/ctgmath
index 79c1a029f41d..39c17668f16a 100644
--- a/libstdc++-v3/include/c_global/ctgmath
+++ b/libstdc++-v3/include/c_global/ctgmath
@@ -26,13 +26,13 @@
  *  This is a Standard C++ Library header.
  */
 
+#ifndef _GLIBCXX_CTGMATH
+#define _GLIBCXX_CTGMATH 1
+
 #ifdef _GLIBCXX_SYSHDR
 #pragma GCC system_header
 #endif
 
-#ifndef _GLIBCXX_CTGMATH
-#define _GLIBCXX_CTGMATH 1
-
 #if __cplusplus < 201103L
 #  include <bits/c++0x_warning.h>
 #else