Apply workaround for 12.3 bug if needed (#9)

Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105651.

Author: Bronek

docker/rhel/Dockerfile

@@ -104,6 +104,25 @@ cat >>${CONAN_HOME}/profiles/default <<EOT
 tools.build:compiler_executables={"c": "${CC}", "cpp": "${CXX}"}
 EOT
 EOF
+
+# Apply workaround for gcc 12.1 bug, if needed (fixed in gcc 12.4)
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105651
+RUN <<EOF
+mkdir test && cd test
+cat >main.cpp <<EOT
+#include <string>
+std::string f() { return "_" + std::string(" "); }
+EOT
+${CXX} -std=c++20 -Wall -Werror -O3 -c main.cpp || touch fail
+if [[ -f fail ]]; then
+  cat >>~/.conan2/profiles/default <<EOT
+tools.build:cxxflags=['-Wno-restrict']
+EOT
+fi
+cd .. && rm -rf test
+EOF
+
+
 # Print the Conan profile to verify the configuration.
 RUN conan profile show
 

docker/ubuntu/Dockerfile

@@ -117,6 +117,24 @@ cat >>~/.conan2/profiles/default <<EOT
 tools.build:compiler_executables={"c": "${CC}", "cpp": "${CXX}"}
 EOT
 EOF
+
+# Apply workaround for gcc 12.1 bug, if needed (fixed in gcc 12.4)
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105651
+RUN <<EOF
+mkdir test && cd test
+cat >main.cpp <<EOT
+#include <string>
+std::string f() { return "_" + std::string(" "); }
+EOT
+${CXX} -std=c++20 -Wall -Werror -O3 -c main.cpp || touch fail
+if [[ -f fail ]]; then
+  cat >>~/.conan2/profiles/default <<EOT
+tools.build:cxxflags=['-Wno-restrict']
+EOT
+fi
+cd .. && rm -rf test
+EOF
+
 # Print the Conan profile to verify the configuration.
 RUN conan profile show