bug#52140: [core-updates-frozen] tcc fails to build

bug#52140: [core-updates-frozen] tcc fails to build

[Guillaume Le Vaillant]

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The 'check' phase fails with:

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------------ test3 ------------
../tcc -B.. -I../include -I.. -I.. -DCONFIG_TCC_SYSINCLUDEPATHS="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/include:/gnu/store/99a2njzz22dkzd8pz75fsi5nbgv9ww0x-linux-libre-headers-5.10.35/include:{B}/include\"" -DCONFIG_TCC_LIBPATHS="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib\"" -DCONFIG_TCC_CRTPREFIX="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib\"" -DCONFIG_TCC_ELFINTERP="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/ld-linux-x86-64.so.2\"" -DTCC_TARGET_X86_64 -run ../tcc.c -B.. -I../include -I.. -I.. -DCONFIG_TCC_SYSINCLUDEPATHS="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/include:/gnu/store/99a2njzz22dkzd8pz75fsi5nbgv9ww0x-linux-libre-headers-5.10.35/include:{B}/include\"" -DCONFIG_TCC_LIBPATHS="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib\"" -DCONFIG_TCC_CRTPREFIX="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib\"" -DCONFIG_TCC_ELFINTERP="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/ld-linux-x86-64.so.2\"" -DTCC_TARGET_X86_64 -run ../tcc.c -B.. -I../include -I.. -I.. -DCONFIG_TCC_SYSINCLUDEPATHS="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/include:/gnu/store/99a2njzz22dkzd8pz75fsi5nbgv9ww0x-linux-libre-headers-5.10.35/include:{B}/include\"" -DCONFIG_TCC_LIBPATHS="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib\"" -DCONFIG_TCC_CRTPREFIX="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib\"" -DCONFIG_TCC_ELFINTERP="\"/gnu/store/2fk1gz2s7ppdicynscra9b19byrrr866-glibc-2.33/lib/ld-linux-x86-64.so.2\"" -DTCC_TARGET_X86_64 -run ../tcc.c -B.. -I../include -I.. -I.. -run tcctest.c > test.out3
make[1]: *** [Makefile:103: test3] Error 139
make[1]: Leaving directory '/tmp/guix-build-tcc-0.9.27.drv-0/tcc-0.9.27/tests'
make: *** [Makefile:347: test] Error 2
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bug#52140: [core-updates-frozen] tcc fails to build

[Robby Zambito]

Hi,

I've noticed tcc seems to be failing for me on the current master branch
of guix (commit b2ae164b211f4da6a3cc5dcb97eeeff3c6c7ebed according to
guix describe).

I tried to see if I could debug the issue, but I've reached the limit of
my knowledge.

The issue occurs on line 168 of tcc_run.c. That function call that is
executed seems to overwrite the memory of s1, which is a struct that
includes a FILE*. Because that FILE* is changed, the later call to
fclose(ppfp) on line 369 of tcc.c causes a segfault, because it no
longer points to a valid FILE.

I have no idea how to start debugging the function call at line 168 of
tcc_run.c, since that is code that has actually been compiled by tcc,
rather than tcc itself (though obviously code that is a part of the test
suite).

I hope we can get this working again.

Thanks,
Robby

bug#52140: [core-updates-frozen] tcc fails to build

[Guillaume Le Vaillant]

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tcc currently builds successfully.
Closing.

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