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Merge #12686: Add -ftrapv to CFLAGS and CXXFLAGS when --enable-debug is used. Enable -ftrapv in Travis.

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98d842cb52 travis: Build with --enable-debug (x86_64-unknown-linux-gnu) (practicalswift)
94e52d13db Add -ftrapv to DEBUG_CXXFLAGS when --enable-debug is used (practicalswift)

Pull request description:

  By generating a trap for signed overflow on addition, subtraction, multiplication operations in the Travis testing we are more likely to identify problematic code prior to merging it.

Tree-SHA512: 47712da53b4ff451b8f22f16ddc3b53100a09060a3b04cda4b8fbbb74e6f666fc07a9cc7abc64cacb87a0aa3f62dc8e3c91a1a0ed12bf82bb2a5624a5d104389
This commit is contained in:
Pieter Wuille 2018-06-26 17:54:27 -07:00 committed by munkybooty
parent f108947cec
commit 3285e21cfd
1 changed files with 1 additions and 0 deletions
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configure.ac
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@ -331,6 +331,7 @@ if test "x$enable_debug" = xyes; then
AX_CHECK_PREPROC_FLAG([-DDEBUG_CORE],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_CORE"]],,[[$CXXFLAG_WERROR]]) AX_CHECK_PREPROC_FLAG([-DDEBUG_CORE],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_CORE"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_PREPROC_FLAG([-DDEBUG_LOCKORDER],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_LOCKORDER"]],,[[$CXXFLAG_WERROR]]) AX_CHECK_PREPROC_FLAG([-DDEBUG_LOCKORDER],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_LOCKORDER"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-ftrapv],[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -ftrapv"],,[[$CXXFLAG_WERROR]])
else else
# We always enable at at least -g1 debug info to support proper stacktraces in crash infos # We always enable at at least -g1 debug info to support proper stacktraces in crash infos
# Stacktraces will be suboptimal due to optimization, but better than nothing. Also, -fno-omit-frame-pointer # Stacktraces will be suboptimal due to optimization, but better than nothing. Also, -fno-omit-frame-pointer