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Description of problem:
An internal compiler error is encountered when compiling certain snippets of code. This appears to be an upstream bug.
Version-Release number of selected component (if applicable):
9.2.1-2.3.el8
How reproducible: 100%
Steps to Reproduce:
1. Install the gcc-toolset-9-gcc package
2. Get the gcc test case by running:
$ wget -Opr96935.c 'https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=gcc/testsuite/gcc.dg/format/pr96935.c;h=c31109704be67ff539493acf73a6f4ca89ffff9f;hb=d01c3def63caf59d1d156aec8d52a1540e5ffe27'
3. Enable the toolset GCC with command:
$ . /opt/rh/gcc-toolset-9/enable
4. Compile the test case with "gcc -c -O pr96935.c".
Actual results: Compile fails with the following error message:
---
during GIMPLE pass: printf-return-value
pr96935.c: In function ‘foo’:
pr96935.c:6:1: internal compiler error: in subspan, at input.h:68
---
Expected results: Successful compilation.
Additional info:
- Bug is also present on gcc-toolset-10-gcc-10.2.1-2.el8.x86_64.
- There is a patch at the following commit address: https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=d01c3def63caf59d1d156aec8d52a1540e5ffe27
(In reply to Marek Polacek from comment #2)
> Already fixed in the latest gcc-toolset-10-gcc.
Has gcc-toolset-10-gcc-10.2.1-8.1.el8 been released already? Looking at gcc-toolset-10-gcc on https://access.redhat.com/downloads/, it still tells me that 10.2.1-2.el8 is the latest version.
(In reply to Joseph C. Sible from comment #3)
> (In reply to Marek Polacek from comment #2)
> > Already fixed in the latest gcc-toolset-10-gcc.
>
> Has gcc-toolset-10-gcc-10.2.1-8.1.el8 been released already? Looking at
> gcc-toolset-10-gcc on https://access.redhat.com/downloads/, it still tells
> me that 10.2.1-2.el8 is the latest version.
That is correct, not released yet. Please stay tuned.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (gcc-toolset-10-gcc bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2021:1823