Add -Wformat-type-confusion to catch a wider range of format string e…

…rrors. (project-chip#7993) This is supported by clang, not gcc, hence adding this only to the clang cflags in the strict warnings config. lwip triggers this warning a lot, so we disable it there. Fixes project-chip#7935
nikita-s-wrk · Sep 23, 2021 · 1c62898 · 1c62898
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diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
@@ -182,6 +182,7 @@ config("strict_warnings") {
     cflags += [
       "-Wimplicit-fallthrough",
       "-Wheader-hygiene",
+      "-Wformat-type-confusion",
     ]
   }
 

diff --git a/third_party/lwip/lwip.gni b/third_party/lwip/lwip.gni
@@ -60,6 +60,7 @@ template("lwip_target") {
       "-Wno-type-limits",
       "-Wno-unused-variable",
       "-Wno-maybe-uninitialized",
+      "-Wno-format-type-confusion",
     ]
   }