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use -fsanitize=undefined for C code in safe build modes

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closes #3569
This commit is contained in:
Andrew Kelley
2019-10-31 17:24:22 -04:00
parent cb5a5ebb20
commit f8cd981c04
2 changed files with 13 additions and 2 deletions
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6
src/codegen.cpp
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@@ -8973,6 +8973,9 @@ void add_cc_args(CodeGen *g, ZigList<const char *> &args, const char *out_dep_pa
switch (g->build_mode) {
case BuildModeDebug:
args.append("-fsanitize=undefined");
args.append("-fsanitize-trap=undefined");
// windows c runtime requires -D_DEBUG if using debug libraries
args.append("-D_DEBUG");
@@ -8985,6 +8988,9 @@ void add_cc_args(CodeGen *g, ZigList<const char *> &args, const char *out_dep_pa
}
break;
case BuildModeSafeRelease:
args.append("-fsanitize=undefined");
args.append("-fsanitize-trap=undefined");
// See the comment in the BuildModeFastRelease case for why we pass -O2 rather
// than -O3 here.
args.append("-O2");