[gcc r16-7355] libstdc++: Allow new-abi-baseline target to overwrite existing file

[Jonathan Wakely]

https://gcc.gnu.org/g:5bec884b2e890ffb950f1a3ccf325d92c3bf8496

commit r16-7355-g5bec884b2e890ffb950f1a3ccf325d92c3bf8496
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Jan 7 14:29:44 2026 +0000

    libstdc++: Allow new-abi-baseline target to overwrite existing file
    
    There doesn't seem to be much benefit to writing the symbols to
    baseline_symbols.txt.new when an existing file is already present. It
    just adds a manual step for maintainers to move the .txt.new file to
    replace the .txt one. Overwriting the file directly allows you to use
    git diff to see what changed immediately, and you can easly use git
    commands to revert to the original file too.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/Makefile.am (new-abi-baseline): Overwrite existing
            file instead of creating baseline_symbols.txt.new.
            * testsuite/Makefile.in: Regenerate.

Diff:
---
 libstdc++-v3/testsuite/Makefile.am | 8 +-------
 libstdc++-v3/testsuite/Makefile.in | 8 +-------
 2 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/libstdc++-v3/testsuite/Makefile.am b/libstdc++-v3/testsuite/Makefile.am
index 270b6886df4c..e8b6eb9e8ad4 100644
--- a/libstdc++-v3/testsuite/Makefile.am
+++ b/libstdc++-v3/testsuite/Makefile.am
@@ -84,13 +84,7 @@ baseline_symbols:
 
 new-abi-baseline:
 	-@$(mkinstalldirs) ${baseline_dir}/${baseline_subdir}
-	-@(output=${baseline_dir}/${baseline_subdir}/baseline_symbols.txt; \
-	  if test -f $${output}; then \
-	    output=$${output}.new; \
-	    t=`echo $${output} | sed 's=.*config/abi/=='`; \
-	    echo "Baseline file already exists, writing to $${t} instead."; \
-	  fi; \
-	  ${extract_symvers} ../src/.libs/libstdc++.so $${output})
+	-@${extract_symvers} ../src/.libs/libstdc++.so ${baseline_dir}/${baseline_subdir}/baseline_symbols.txt
 
 %/site.exp: site.exp
 	-@test -d $* || mkdir $*
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index 65ec4e7fb146..3aed09d10492 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -645,13 +645,7 @@ baseline_symbols:
 
 new-abi-baseline:
 	-@$(mkinstalldirs) ${baseline_dir}/${baseline_subdir}
-	-@(output=${baseline_dir}/${baseline_subdir}/baseline_symbols.txt; \
-	  if test -f $${output}; then \
-	    output=$${output}.new; \
-	    t=`echo $${output} | sed 's=.*config/abi/=='`; \
-	    echo "Baseline file already exists, writing to $${t} instead."; \
-	  fi; \
-	  ${extract_symvers} ../src/.libs/libstdc++.so $${output})
+	-@${extract_symvers} ../src/.libs/libstdc++.so ${baseline_dir}/${baseline_subdir}/baseline_symbols.txt
 
 %/site.exp: site.exp
 	-@test -d $* || mkdir $*