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Re: PATCH COMMITTED: gcc 4.2 support for -Wstrict-overflow/-fstrict-overflow

On 3/12/07, Eric Botcazou <> wrote:
> I have just committed the gcc 4.2 patch which adds support for
> -Wstrict-overflow and -fstrict-overflow, as previously approved.  A
> bunch of testing was required.

Not enough apparently. :-) I get this on x86-64/Linux:

gcc   -g -fkeep-inline-functions -DIN_GCC   -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute
-fno-common   -DHAVE_CONFIG_H  -o xgcc gcc.o opts-common.o gcc-options.o
gccspec.o \
  intl.o prefix.o version.o
driver-i386.o  ../libcpp/libcpp.a   ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a
gcc.o(.text+0x128): In function `issue_strict_overflow_warning':
/home/eric/svn/gcc-4_2-branch/gcc/flags.h:347: undefined reference to
collect2: ld returned 1 exit status
make[3]: *** [xgcc] Error 1


2007-02-14 Richard Guenther <>

* flags.h (issue_strict_overflow_warning): Convert to a macro.

is missing...


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