Sync with upstream (2026-05-20): 5dfe1056b85f249e7b4ad454a59f2951c716191e

.editorconfig

@@ -30,6 +30,13 @@ end_of_line = lf
 insert_final_newline = true
 tab_width = 8
 
+# Git commit messages
+[COMMIT_EDITMSG]
+indent_size = 8
+indent_style = tab
+max_line_length = 72
+trim_trailing_whitespace = true
+
 # EditorConfig files
 [.editorconfig]
 charset = utf-8

ChangeLog

@@ -1,3 +1,35 @@
+2026-05-15  Karl Meakin  <karl.meakin@arm.com>
+
+	* .editorconfig (COMMIT_EDITMSG): New section.
+
+2026-05-13  Zhongyao Chen  <chen.zhongyao@zte.com.cn>
+
+	* MAINTAINERS (Write After Approval): Add myself.
+	(Contributing under the DCO): Add myself.
+
+2026-05-11  Naveen  <naveen.siddegowda@oss.qualcomm.com>
+
+	* MAINTAINERS: Update my email and add myself to the DCO
+	section.
+
+2026-05-04  Vijay Shankar  <vijay@linux.ibm.com>
+
+	* MAINTAINERS: Add myself to write after approval.
+
+2026-05-01  Manuel Jacob  <me@manueljacob.de>
+
+	* configure.ac: Set default for CPP_FOR_BUILD environment variable in all cases.
+	* configure: Regenerate.
+
+2026-05-01  Manuel Jacob  <me@manueljacob.de>
+
+	* configure.ac: Preserve *_FOR_BUILD environment variables in all cases.
+	* configure: Regenerate.
+
+2026-04-30  Christopher Bazley  <chris.bazley@arm.com>
+
+	* MAINTAINERS: Add myself to write after approval.
+
 2026-04-28  Bohan Lei  <garthlei@linux.alibaba.com>
 
 	* MAINTAINERS: Add myself to write after approval and DCO.

MAINTAINERS

@@ -363,6 +363,7 @@ Gergö Barany                    -               <gergo@codesourcery.com>
 Daniel Barboza                  dbarboza        <daniel.barboza@oss.qualcomm.com>
 Thiago Jung Bauermann           -               <thiago.bauermann@linaro.org>
 Charles Baylis                  cbaylis         <charles.baylis@linaro.org>
+Christopher Bazley              chrbaz01        <chris.bazley@arm.com>
 Tejas Belagod                   belagod         <tejas.belagod@arm.com>
 Andrey Belevantsev              abel            <abel@ispras.ru>
 Matthew Beliveau                -               <mbelivea@redhat.com>
@@ -416,6 +417,7 @@ Arnaud Charlet                  charlet         <charlet@adacore.com>
 Chandra Chavva                  -               <cchavva@redhat.com>
 Dhruv Chawla                    dhruvc          <dhruvc@nvidia.com>
 Dehao Chen                      dehao           <dehao@google.com>
+Zhongyao Chen			-		<chenzhongyao.hit@gmail.com>
 Fabien Chêne                    fabien          <fabien@gcc.gnu.org>
 Bin Cheng                       amker           <bin.cheng@linux.alibaba.com>
 Kito Cheng                      kito            <kito.cheng@gmail.com>
@@ -521,7 +523,7 @@ Jiufu Guo                       guojiufu        <guojiufu@linux.ibm.com>
 Xuepeng Guo                     xguo            <terry.xpguo@gmail.com>
 Wei Guozhi                      carrot          <carrot@google.com>
 Vineet Gupta                    vineetg         <vineet.gupta@linux.dev>
-Naveen H.S                      naveenh         <naveenh@marvell.com>
+Naveen H.S                      naveenh         <naveen.siddegowda@oss.qualcomm.com>
 Mostafa Hagog                   hagog           <hagog@gcc.gnu.org>
 Olivier Hainque                 hainque         <hainque@adacore.com>
 Jivan Hakobyan                  -               <jivanhakobyan9@gmail.com>
@@ -850,6 +852,7 @@ Chung-Lin Tang                  cltang          <cltang@baylibre.com>
 Samuel Tardieu                  sam             <sam@rfc1149.net>
 Ian Lance Taylor                ian             <ian@airs.com>
 Sam Tebbs                       samtebbs        <samuel.tebbs@gmail.com>
+Vijay Telidevulapalli           vtelidev        <vijay@linux.ibm.com>
 Dinar Temirbulatov              dinar           <dtemirbulatov@gmail.com>
 Matt Thomas                     matt            <matt@3am-software.com>
 Paul Thomas                     pault           <pault@gcc.gnu.org>
@@ -962,13 +965,16 @@ Daniel Barboza                                  <dbarboza@qti.qualcomm.com>
 Daniel Barboza                                  <dbarboza@ventanamicro.com>
 Peter Bergner                                   <bergner@tenstorrent.com>
 Dhruv Chawla                                    <dhruvc@nvidia.com>
+Zhongyao Chen					<chenzhongyao.hit@gmail.com>
+Zhongyao Chen					<chen.zhongyao@zte.com.cn>
 Juergen Christ                                  <jchrist@linux.ibm.com>
 Alejandro Colomar                               <alx@kernel.org>
 Giuseppe D'Angelo                               <giuseppe.dangelo@kdab.com>
 Robin Dapp                                      <rdapp.gcc@gmail.com>
 Robin Dapp                                      <rdapp@qti.qualcomm.com>
 Robin Dapp                                      <rdapp@ventanamicro.com>
 Prachi Godbole                                  <pgodbole@nvidia.com>
+Naveen Gowda                                    <naveen.siddegowda@oss.qualcomm.com>
 Aldy Hernandez                                  <aldy@quesejoda.com>
 Michal Jires                                    <mjires@suse.cz>
 Matthias Kretz                                  <m.kretz@gsi.de>

config/ChangeLog

@@ -1,3 +1,7 @@
+2026-05-05  Pietro Monteiro  <pietro@sociotechnical.xyz>
+
+	* visibility.m4: New file.
+
 2026-04-13  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
 
 	PR target/69639

config/visibility.m4

@@ -0,0 +1,14 @@
+dnl Check whether the target supports hidden visibility.
+AC_DEFUN([GCC_CHECK_ATTRIBUTE_VISIBILITY], [
+  AC_CACHE_CHECK([whether the target supports hidden visibility],
+		 gcc_cv_have_attribute_visibility, [
+  save_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Werror"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void __attribute__((visibility("hidden"))) foo(void) { }]], [])],
+		    gcc_cv_have_attribute_visibility=yes,
+		    gcc_cv_have_attribute_visibility=no)
+  CFLAGS="$save_CFLAGS"])
+  if test $gcc_cv_have_attribute_visibility = yes; then
+    AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1,
+      [Define to 1 if the target supports __attribute__((visibility(...))).])
+  fi])

configure

@@ -4318,7 +4318,6 @@ if test "${build}" != "${host}" ; then
   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
   AS_FOR_BUILD=${AS_FOR_BUILD-as}
   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
-  CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
   DSYMUTIL_FOR_BUILD=${DSYMUTIL_FOR_BUILD-dsymutil}
@@ -4333,23 +4332,24 @@ if test "${build}" != "${host}" ; then
   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
 else
-  AR_FOR_BUILD="\$(AR)"
-  AS_FOR_BUILD="\$(AS)"
-  CC_FOR_BUILD="\$(CC)"
-  CXX_FOR_BUILD="\$(CXX)"
-  DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
-  DSYMUTIL_FOR_BUILD="\$(DSYMUTIL)"
-  GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
-  A68_FOR_BUILD="\$(A68)"
-  GOC_FOR_BUILD="\$(GOC)"
-  GDC_FOR_BUILD="\$(GDC)"
-  GNATMAKE_FOR_BUILD="\$(GNATMAKE)"
-  LD_FOR_BUILD="\$(LD)"
-  NM_FOR_BUILD="\$(NM)"
-  RANLIB_FOR_BUILD="\$(RANLIB)"
-  WINDRES_FOR_BUILD="\$(WINDRES)"
-  WINDMC_FOR_BUILD="\$(WINDMC)"
-fi
+  AR_FOR_BUILD="${AR_FOR_BUILD-\$(AR)}"
+  AS_FOR_BUILD="${AS_FOR_BUILD-\$(AS)}"
+  CC_FOR_BUILD="${CC_FOR_BUILD-\$(CC)}"
+  CXX_FOR_BUILD="${CXX_FOR_BUILD-\$(CXX)}"
+  DLLTOOL_FOR_BUILD="${DLLTOOL_FOR_BUILD-\$(DLLTOOL)}"
+  DSYMUTIL_FOR_BUILD="${DSYMUTIL_FOR_BUILD-\$(DSYMUTIL)}"
+  GFORTRAN_FOR_BUILD="${GFORTRAN_FOR_BUILD-\$(GFORTRAN)}"
+  A68_FOR_BUILD="${A68_FOR_BUILD-\$(A68)}"
+  GOC_FOR_BUILD="${GOC_FOR_BUILD-\$(GOC)}"
+  GDC_FOR_BUILD="${GDC_FOR_BUILD-\$(GDC)}"
+  GNATMAKE_FOR_BUILD="${GNATMAKE_FOR_BUILD-\$(GNATMAKE)}"
+  LD_FOR_BUILD="${LD_FOR_BUILD-\$(LD)}"
+  NM_FOR_BUILD="${NM_FOR_BUILD-\$(NM)}"
+  RANLIB_FOR_BUILD="${RANLIB_FOR_BUILD-\$(RANLIB)}"
+  WINDRES_FOR_BUILD="${WINDRES_FOR_BUILD-\$(WINDRES)}"
+  WINDMC_FOR_BUILD="${WINDMC_FOR_BUILD-\$(WINDMC)}"
+fi
+CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
 
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'

configure.ac

@@ -1453,7 +1453,6 @@ if test "${build}" != "${host}" ; then
   AR_FOR_BUILD=${AR_FOR_BUILD-ar}
   AS_FOR_BUILD=${AS_FOR_BUILD-as}
   CC_FOR_BUILD=${CC_FOR_BUILD-gcc}
-  CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
   CXX_FOR_BUILD=${CXX_FOR_BUILD-g++}
   DLLTOOL_FOR_BUILD=${DLLTOOL_FOR_BUILD-dlltool}
   DSYMUTIL_FOR_BUILD=${DSYMUTIL_FOR_BUILD-dsymutil}
@@ -1468,23 +1467,24 @@ if test "${build}" != "${host}" ; then
   WINDRES_FOR_BUILD=${WINDRES_FOR_BUILD-windres}
   WINDMC_FOR_BUILD=${WINDMC_FOR_BUILD-windmc}
 else
-  AR_FOR_BUILD="\$(AR)"
-  AS_FOR_BUILD="\$(AS)"
-  CC_FOR_BUILD="\$(CC)"
-  CXX_FOR_BUILD="\$(CXX)"
-  DLLTOOL_FOR_BUILD="\$(DLLTOOL)"
-  DSYMUTIL_FOR_BUILD="\$(DSYMUTIL)"
-  GFORTRAN_FOR_BUILD="\$(GFORTRAN)"
-  A68_FOR_BUILD="\$(A68)"
-  GOC_FOR_BUILD="\$(GOC)"
-  GDC_FOR_BUILD="\$(GDC)"
-  GNATMAKE_FOR_BUILD="\$(GNATMAKE)"
-  LD_FOR_BUILD="\$(LD)"
-  NM_FOR_BUILD="\$(NM)"
-  RANLIB_FOR_BUILD="\$(RANLIB)"
-  WINDRES_FOR_BUILD="\$(WINDRES)"
-  WINDMC_FOR_BUILD="\$(WINDMC)"
+  AR_FOR_BUILD="${AR_FOR_BUILD-\$(AR)}"
+  AS_FOR_BUILD="${AS_FOR_BUILD-\$(AS)}"
+  CC_FOR_BUILD="${CC_FOR_BUILD-\$(CC)}"
+  CXX_FOR_BUILD="${CXX_FOR_BUILD-\$(CXX)}"
+  DLLTOOL_FOR_BUILD="${DLLTOOL_FOR_BUILD-\$(DLLTOOL)}"
+  DSYMUTIL_FOR_BUILD="${DSYMUTIL_FOR_BUILD-\$(DSYMUTIL)}"
+  GFORTRAN_FOR_BUILD="${GFORTRAN_FOR_BUILD-\$(GFORTRAN)}"
+  A68_FOR_BUILD="${A68_FOR_BUILD-\$(A68)}"
+  GOC_FOR_BUILD="${GOC_FOR_BUILD-\$(GOC)}"
+  GDC_FOR_BUILD="${GDC_FOR_BUILD-\$(GDC)}"
+  GNATMAKE_FOR_BUILD="${GNATMAKE_FOR_BUILD-\$(GNATMAKE)}"
+  LD_FOR_BUILD="${LD_FOR_BUILD-\$(LD)}"
+  NM_FOR_BUILD="${NM_FOR_BUILD-\$(NM)}"
+  RANLIB_FOR_BUILD="${RANLIB_FOR_BUILD-\$(RANLIB)}"
+  WINDRES_FOR_BUILD="${WINDRES_FOR_BUILD-\$(WINDRES)}"
+  WINDMC_FOR_BUILD="${WINDMC_FOR_BUILD-\$(WINDMC)}"
 fi
+CPP_FOR_BUILD="${CPP_FOR_BUILD-\$(CC_FOR_BUILD) -E}"
 
 AC_PROG_CC_C99
 AC_PROG_CXX

contrib/ChangeLog

@@ -1,3 +1,23 @@
+2026-05-12  Léo Hardt  <leom.hardt@inf.ufrgs.br>
+
+	* texi2pod.pl: Remove rule to parse the defunct @gol macro.
+
+2026-05-11  Andrew Pinski  <andrew.pinski@oss.qualcomm.com>
+
+	PR other/125275
+	* check_GNU_style_lib.py (LineLengthCheck.check): Ignore
+	filenames that end with .opt.
+	(FunctionParenthesisCheck.check): Likewise.
+
+2026-05-04  Iain Buclaw  <ibuclaw@gdcproject.org>
+
+	* compare-all-tests: Remove references to m32c.
+	* config-list.mk: Likewise.
+
+2026-04-30  Jakub Jelinek  <jakub@redhat.com>
+
+	* gennews (files): Add files for GCC 16.
+
 2026-04-22  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc-changelog/git_update_version.py (active_refs): Add

contrib/check_GNU_style_lib.py

@@ -82,7 +82,7 @@ def __init__(self):
 
     def check(self, filename, lineno, line):
         line_expanded = line.replace('\t', self.expanded_tab)
-        if len(line_expanded) > self.limit:
+        if not filename.endswith(".opt") and len(line_expanded) > self.limit:
             return CheckError(filename, lineno,
                 line_expanded[:self.limit]
                     + error_string(line_expanded[self.limit:]),
@@ -167,6 +167,9 @@ def __init__(self):
         self.re = re.compile(r'\w(\s{2,})?(\()')
 
     def check(self, filename, lineno, line):
+        if filename.endswith(".opt"):
+            return None
+
         if '#define' in line:
             return None
 

contrib/compare-all-tests

@@ -24,7 +24,6 @@ arm_opts='-mthumb/-march=armv5t -mthumb/-march=armv6t2 -march=armv5 -mthumb/-mar
 cris_opts='-march=v32 -march=v1'
 h8300_opts='/ -mh -mh/-mn -ms -ms/-mn -msx -msx/-mn -mint32 -mh/-mint32 -mh/-mn/-mint32 -ms/-mint32 -ms/-mn/-mint32 -msx/-mint32 -msx/-mn/-mint32'
 i386_opts='-m32 -m64 -m32/-msse/-msse2/-mfpmath=sse'
-m32c_opts='-mcpu=r8c -mcpu=m16c -mcpu=m32c'
 m68k_opts='-m68000 -m68020 -m68020/-m68881 -m68040/-m68881 -m68060/-m68881 -mcfv4e'
 mips_opts='-msoft-float/-mgp32/-mips16 -mabi=32/-mfp32/-mgp32/-mips16 -mabi=o64/-mfp64/-mgp64/-mips16 -msoft-float/-mgp32 -mfp32/-mgp32 -march=mips64r2/-mabi=32/-mfp64/-mgp32 -msoft-float/-mgp64 -msingle-float/-mfp32/-mgp64 -mfp64/-mgp64'
 mn10300_opts='-mam33 -mam33-2'
@@ -34,7 +33,7 @@ s390_opts='-m31 -m31/-mzarch -m64'
 sh_opts='-m3 -m3e -m4 -m4a -m4al -m4/-mieee -m1 -m1/-mno-cbranchdi -m2a -m2a/-mieee -m2e -m2e/-mieee'
 sparc_opts='-mcpu=v8/-m32 -mcpu=v9/-m32 -m64'
 
-all_targets='alpha arm avr bfin cris fr30 frv h8300 ia64 iq2000 m32c m32r m68k mcore mips mmix mn10300 pa pdp11 ppc sh sparc v850 vax xstormy16 xtensa' # e500 
+all_targets='alpha arm avr bfin cris fr30 frv h8300 ia64 iq2000 m32r m68k mcore mips mmix mn10300 pa pdp11 ppc sh sparc v850 vax xstormy16 xtensa' # e500
 
 test_one_file ()
 {

contrib/config-list.mk

@@ -66,7 +66,7 @@ LIST = \
   lm32-rtems lm32-uclinux \
   loongarch32-linux-gnuf64 loongarch32-linux-gnuf32 loongarch32-linux-gnusf \
   loongarch64-linux-gnuf64 loongarch64-linux-gnuf32 loongarch64-linux-gnusf \
-  m32c-elfOPT-enable-obsolete m32r-elf m32rle-elf \
+  m32r-elf m32rle-elf \
   m68k-elf m68k-netbsdelf \
   m68k-uclinux m68k-linux m68k-rtems \
   mcore-elf microblaze-linux microblaze-elf \

contrib/gennews

@@ -23,6 +23,7 @@
 
 website=http://gcc.gnu.org/
 files="
+    gcc-16/index.html gcc-16/changes.html
     gcc-15/index.html gcc-15/changes.html
     gcc-14/index.html gcc-14/changes.html
     gcc-13/index.html gcc-13/changes.html

contrib/texi2pod.pl

@@ -416,14 +416,13 @@ sub postprocess
     # Cross references are thrown away, as are @noindent and @refill.
     # (@noindent is impossible in .pod, and @refill is unnecessary.)
     # @* is also impossible in .pod; we discard it and any newline that
-    # follows it.  Similarly, our macro @gol must be discarded.
+    # follows it.
 
     s/\(?\@xref\{(?:[^\}]*)\}(?:[^.<]|(?:<[^<>]*>))*\.\)?//g;
     s/\s+\(\@pxref\{(?:[^\}]*)\}\)//g;
     s/;\s+\@pxref\{(?:[^\}]*)\}//g;
     s/\@noindent\s*//g;
     s/\@refill//g;
-    s/\@gol//g;
     s/\@\*\s*\n?//g;
 
     # Anchors are thrown away