Strange error "free(): invalid pointer" about php-mustache

[remicollet]

Ok, using GCC 6.2 for both libmustache and pecl/mustache fixes the issue (build + test sutie ok with PHP 5.6/7.0/7.1/7.2)

So fixed on my side by

• https://git.remirepo.net/cgit/rpms/lib/libmustache.git/commit/?id=18e92a27903816b6db19122eb03ddcfb8c29afdd
• https://git.remirepo.net/cgit/rpms/lib/libmustache.git/commit/?id=18e92a27903816b6db19122eb03ddcfb8c29afdd

Closing as very specific to build environment

[jbboehr]

@remicollet I notice I have that error if libmustache is compiled with gcc 4.8, but php-mustache is compiled with gcc 6.2:

FROM centos:7

RUN rm -f /var/lib/rpm/__* && rpm --rebuilddb -v -v && yum clean all
RUN sed -i s/enabled=1/enabled=0/g /etc/yum/pluginconf.d/fastestmirror.conf
RUN yum install -y centos-release-scl
RUN yum install -y yum install devtoolset-6-gcc*
RUN yum install -y php php-devel autoconf automake libtool make m4 git file
RUN yum install -y gcc gcc-c++

RUN gcc --version && \
	git clone https://github.com/jbboehr/libmustache.git /libmustache && \
	cd /libmustache && \
	autoreconf -fiv && \
	./configure --without-mustache-spec && \
	make clean all install

RUN source scl_source enable devtoolset-6 && \
	gcc --version && \
	git clone https://github.com/jbboehr/php-mustache.git /php-mustache && \
	cd /php-mustache && \
	phpize && \
	./configure --enable-mustache && \
	make clean all

RUN echo "source scl_source enable devtoolset-6 && cd /php-mustache && make test" > /entry.sh && \
	chmod +x /entry.sh

CMD "bash" "/entry.sh"

vs

FROM centos:7

RUN rm -f /var/lib/rpm/__* && rpm --rebuilddb -v -v && yum clean all
RUN sed -i s/enabled=1/enabled=0/g /etc/yum/pluginconf.d/fastestmirror.conf
RUN yum install -y centos-release-scl
RUN yum install -y yum install devtoolset-6-gcc*
RUN yum install -y php php-devel autoconf automake libtool make m4 git file

RUN source scl_source enable devtoolset-6 && \
	gcc --version && \
	git clone https://github.com/jbboehr/libmustache.git /libmustache && \
	cd /libmustache && \
	autoreconf -fiv && \
	./configure --without-mustache-spec && \
	make clean all install

RUN source scl_source enable devtoolset-6 && \
	gcc --version && \
	git clone https://github.com/jbboehr/php-mustache.git /php-mustache && \
	cd /php-mustache && \
	phpize && \
	./configure --enable-mustache && \
	make clean all

RUN echo "source scl_source enable devtoolset-6 && cd /php-mustache && make test" > /entry.sh && \
	chmod +x /entry.sh

CMD "bash" "/entry.sh"

[jbboehr]

I assume there is some issue with usage of std::unordered_map in the library vs extension being compiled under different versions of gcc.

[jbboehr]

@remicollet let me know if compiling libmustache and php-mustache with the same version of gcc works for you, and whether or not it's possible to do that for your packaging needs.

I believe ensuring an object is both created and destroyed in code compiled by a particular version of gcc (meaning an object created in php-mustache would need to also be destroyed in php-mustache), might be a possible workaround, but it seems dangerous using two different versions to compile parts of the code.

[remicollet]

whether or not it's possible to do that for your packaging needs.

The issue is that only php 7.1/7.2 are built with gcc 6.2 (which give some perf improvement)
So changing gcc version used for libmustaphe will result in other issue for 5.6/7.0

IIRC, I have tried to build both libmustache and pecl/mustache with 6.2... without success, will try again

[jbboehr]

Perfect!