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Remove -fwrapv compiler flag. (#278)

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This was making sure that the overflow in some our opcode
implementations was visible to the C code so that overflow
detection would work in gcc and clang.

This is now handled on those compilers by using some built-ins
that detect overflow.

The `-fwrapv` should no longer be needed.

Closes Interlisp/medley#90.
This commit is contained in:
Bruce Mitchener 2021-01-25 07:55:51 +07:00 committed by GitHub
parent a45bce3133
commit ab28391c18
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 3 additions and 3 deletions
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2
CMakeLists.txt
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@ -9,7 +9,7 @@ IF(CMAKE_C_COMPILER_ID MATCHES "Clang" OR CMAKE_COMPILER_ID MATCHES "GNU")
IF(UNIX AND CMAKE_GENERATOR STREQUAL "Ninja")
SET(CMAKE_C_FLAGS "-fdiagnostics-color=always ${CMAKE_C_FLAGS}")
ENDIF()
SET(CMAKE_C_FLAGS "-fno-strict-aliasing -fwrapv ${CMAKE_C_FLAGS}")
SET(CMAKE_C_FLAGS "-fno-strict-aliasing ${CMAKE_C_FLAGS}")
ENDIF()
IF(CMAKE_C_COMPILER_ID MATCHES "SunPro")

4
bin/makefile-header
View File

@ -11,8 +11,8 @@ RANLIB = ranlib
AR = ar rcv
# Compiler flags
CLANG_CFLAGS = -std=gnu99 -fno-strict-aliasing -fwrapv
GCC_CFLAGS = -std=gnu99 -fno-strict-aliasing -fwrapv
CLANG_CFLAGS = -std=gnu99 -fno-strict-aliasing
GCC_CFLAGS = -std=gnu99 -fno-strict-aliasing
DEVSTUDIO_CFLAGS = -std=gnu99 -fno-strict-aliasing
DLPIFILES =