[lmi-commits] [lmi] master 5a4fcaed 2/2: Begin adapting to gcc-12

[Greg Chicares]

branch: master
commit 5a4fcaed7309f5d4caee3443538ceb3edf0e119b
Author: Gregory W. Chicares <gchicares@sbcglobal.net>
Commit: Gregory W. Chicares <gchicares@sbcglobal.net>

    Begin adapting to gcc-12
---
 compiler_gcc_warnings.make | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/compiler_gcc_warnings.make b/compiler_gcc_warnings.make
index 752d414a..857f29c6 100644
--- a/compiler_gcc_warnings.make
+++ b/compiler_gcc_warnings.make
@@ -44,6 +44,18 @@ else ifneq (,$(filter $(gcc_version), 11 11.0))
     -Wenum-conversion \
     -Winvalid-imported-macros \
 
+else ifneq (,$(filter $(gcc_version), 12 12.0))
+
+# g++-11 warnings not recognized by g++-10
+# [also consider any new warnings added in gcc-12]
+
+  gcc_version_specific_cxx_warnings := \
+    -Wctad-maybe-unsupported \
+    -Wdeprecated-enum-enum-conversion \
+    -Wdeprecated-enum-float-conversion \
+    -Wenum-conversion \
+    -Winvalid-imported-macros \
+
 endif
 
 # Write '-Wno' options at the end, with a rationale here.
@@ -249,6 +261,19 @@ wno_sign_conv_objects := \
 
 $(wno_sign_conv_objects): gcc_common_extra_warnings += -Wno-sign-conversion
 
+# gcc-12 gives spurious warnings when <regex> is used. See:
+#   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105562
+# For lmi, this seems to affect only UBSAN builds.
+
+wno_maybe_uninitialized_objects := \
+  my_prod.o \
+  pdf_command_wx.o \
+  wx_test_about_version.o \
+
+ifeq (ubsan,$(build_type))
+  $(wno_maybe_uninitialized_objects): gcc_common_extra_warnings += 
-Wno-maybe-uninitialized
+endif
+
 # Keep version-specific warnings last, so that they override others.
 
 C_WARNINGS = \