On 06/12/23 15:34 +0100, Gwenole Beauchesne wrote:
Tested on x86_64-pc-linux-gnu with --enable-languages=c,c++ and
additional -Wformat to CXXFLAGS.

Please CC the libstd...@gcc.gnu.org list on all libstdc++ patches, as
documented at https://gcc.gnu.org/lists.html

Otherwise I won't see the patches unless I happen to glance at the
gcc-patches archive by chance.

The patch seems OK, but what exactly is it fixing? I don't see any
warning when adding -Wformat to the test flags.

-- >8 --

Fix testsuite when compiling with -Wformat. Use nonnull arguments so
that -Wformat does not cause extraneous output to be reported as an
error.

FAIL: tr1/8_c_compatibility/cinttypes/functions.cc (test for excess errors)

libstdc++-v3/ChangeLog:

   * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
   nonnull arguments to strtoimax() and wcstoimax() functions.

Signed-off-by: Gwenole Beauchesne <gb.de...@gmail.com>
---
.../testsuite/tr1/8_c_compatibility/cinttypes/functions.cc    | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/libstdc++-v3/testsuite/tr1/8_c_compatibility/cinttypes/functions.cc 
b/libstdc++-v3/testsuite/tr1/8_c_compatibility/cinttypes/functions.cc
index 518ddf49875..21f5263b5cc 100644
--- a/libstdc++-v3/testsuite/tr1/8_c_compatibility/cinttypes/functions.cc
+++ b/libstdc++-v3/testsuite/tr1/8_c_compatibility/cinttypes/functions.cc
@@ -29,10 +29,10 @@ void test01()
#if _GLIBCXX_USE_C99_INTTYPES_TR1

  std::tr1::intmax_t i = 0, numer = 0, denom = 0, base = 0;
-  const char* s = 0;
+  const char* s = "0";
  char** endptr = 0;
#if defined(_GLIBCXX_USE_WCHAR_T) && _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1
-  const wchar_t* ws = 0;
+  const wchar_t* ws = L"0";
  wchar_t** wendptr = 0;
#endif


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