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* [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin
@ 2022-04-27 21:09 jsm28 at gcc dot gnu.org
2022-04-27 21:20 ` [Bug preprocessor/105412] " pinskia at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2022-04-27 21:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105412
Bug ID: 105412
Summary: [10/11/12 Regression] Missing phony target with -MP
for first include when compiling from stdin
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
When generating dependencies with -M -MP, the phony target for the first
included header (typically stdc-predef.h) is missing if compiling from stdin,
with GCC 10 and later but not with GCC 9. For example:
$ echo "#include <cstdlib>" |
./many9/install/compilers/x86_64-linux-gnu/bin/x86_64-glibc-linux-gnu-g++ -M
-MP -x c++ - | grep stdc-predef
/scratch/jmyers/glibc/many9/install/compilers/x86_64-linux-gnu/sysroot/usr/include/stdc-predef.h
\
/scratch/jmyers/glibc/many9/install/compilers/x86_64-linux-gnu/sysroot/usr/include/stdc-predef.h:
shows the expected phony target (the second line of output) with a GCC 9
compiler, but
$ echo "#include <cstdlib>" |
./many10/install/compilers/x86_64-linux-gnu/bin/x86_64-glibc-linux-gnu-g++ -M
-MP -x c++ - | grep stdc-predef
/scratch/jmyers/glibc/many10/install/compilers/x86_64-linux-gnu/sysroot/usr/include/stdc-predef.h
\
shows that line of output is missing with GCC 10 and later.
(This example is adapted from code in glibc's configure script, but the bug
only actually causes problems with glibc when the compiler is used with an old
sysroot lacking stdc-predef.h and so the missing phony target is that for
<cstdlib> itself.)
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug preprocessor/105412] [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin 2022-04-27 21:09 [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin jsm28 at gcc dot gnu.org @ 2022-04-27 21:20 ` pinskia at gcc dot gnu.org 2022-04-28 16:26 ` [Bug preprocessor/105412] [10/11/12/13 " jakub at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu.org @ 2022-04-27 21:20 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105412 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |10.4 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug preprocessor/105412] [10/11/12/13 Regression] Missing phony target with -MP for first include when compiling from stdin 2022-04-27 21:09 [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin jsm28 at gcc dot gnu.org 2022-04-27 21:20 ` [Bug preprocessor/105412] " pinskia at gcc dot gnu.org @ 2022-04-28 16:26 ` jakub at gcc dot gnu.org 2022-06-28 10:49 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2022-04-28 16:26 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105412 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2022-04-28 CC| |jakub at gcc dot gnu.org Keywords|needs-bisection | Ever confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Started with r10-205-g61145d937ba07e368d8251fd0ffe0b987b50a7b5 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug preprocessor/105412] [10/11/12/13 Regression] Missing phony target with -MP for first include when compiling from stdin 2022-04-27 21:09 [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin jsm28 at gcc dot gnu.org 2022-04-27 21:20 ` [Bug preprocessor/105412] " pinskia at gcc dot gnu.org 2022-04-28 16:26 ` [Bug preprocessor/105412] [10/11/12/13 " jakub at gcc dot gnu.org @ 2022-06-28 10:49 ` jakub at gcc dot gnu.org 2022-07-26 11:44 ` rguenth at gcc dot gnu.org 2023-07-07 10:43 ` [Bug preprocessor/105412] [11/12/13/14 " rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2022-06-28 10:49 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105412 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|10.4 |10.5 --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- GCC 10.4 is being released, retargeting bugs to GCC 10.5. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug preprocessor/105412] [10/11/12/13 Regression] Missing phony target with -MP for first include when compiling from stdin 2022-04-27 21:09 [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin jsm28 at gcc dot gnu.org ` (2 preceding siblings ...) 2022-06-28 10:49 ` jakub at gcc dot gnu.org @ 2022-07-26 11:44 ` rguenth at gcc dot gnu.org 2023-07-07 10:43 ` [Bug preprocessor/105412] [11/12/13/14 " rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2022-07-26 11:44 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105412 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |9.5.0 Priority|P3 |P2 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug preprocessor/105412] [11/12/13/14 Regression] Missing phony target with -MP for first include when compiling from stdin 2022-04-27 21:09 [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin jsm28 at gcc dot gnu.org ` (3 preceding siblings ...) 2022-07-26 11:44 ` rguenth at gcc dot gnu.org @ 2023-07-07 10:43 ` rguenth at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: rguenth at gcc dot gnu.org @ 2023-07-07 10:43 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105412 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|10.5 |11.5 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- GCC 10 branch is being closed. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-07-07 10:43 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-04-27 21:09 [Bug preprocessor/105412] New: [10/11/12 Regression] Missing phony target with -MP for first include when compiling from stdin jsm28 at gcc dot gnu.org 2022-04-27 21:20 ` [Bug preprocessor/105412] " pinskia at gcc dot gnu.org 2022-04-28 16:26 ` [Bug preprocessor/105412] [10/11/12/13 " jakub at gcc dot gnu.org 2022-06-28 10:49 ` jakub at gcc dot gnu.org 2022-07-26 11:44 ` rguenth at gcc dot gnu.org 2023-07-07 10:43 ` [Bug preprocessor/105412] [11/12/13/14 " rguenth at gcc dot gnu.org
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