Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On 2021/03/10 16:07, Florian Klämpfl via fpc-pascal wrote: Am 10.03.2021 um 04:59 schrieb Toru Takubo via fpc-pascal : Can you please post the output of -va of the arm compiler and provide some information about the arm system you are using? The output message with -va option can be downloaded from below. http://support.e-parcel.ne.jp/downloads/tmp/fpc-va.txt [0.016] (3101) Macro defined: CPUARMV4 [0.016] (3101) Macro defined: FPUFPA I am not sure how this happened but you are compiling for an ancient arm architecture, this is not going to work. FPA uses a different floating point format so this explains the problems. I understand it's my fault. I will dig into my development settings. Thank you and all list members for help and advice. Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On 2021/03/10 15:29, LacaK via fpc-pascal wrote: Dňa 9.3.2021 o 15:34 Toru Takubo via fpc-pascal napísal(a): On 2021/03/09 18:11, LacaK via fpc-pascal wrote: I did run test program on RaspberryPI: Linux+ARM and results are as expected. (FPC 3.2.0) -Laco. My compiler setting is below. Does something missing or wrong? My settings are: -Tlinux -Parm -MObjFPC -Scghi -O1 -g -gl -l -vewnhibq -Filib\arm-linux -Fu. -FUlib\arm-linux -FE. -oproject1 Thank you for your information. Unfortunately, I tried this setting in vain. --- C:\lazarus\fpc\3.2.0\bin\i386-win32\fpc.exe -Tlinux -Parm -MObjFPC -Sh -CX -O3 -XX -l -vewnibq -vh- -vm5057,5028,5024,3042 -Fiobj\arm-linux -Fu. -FEobj\arm-linux -oobj\arm-linux\project1 --- If possible, would you publish your executive of the test program to try it? Uploaded to http://moja.uschovna.zoznam.sk/link/af6c3620-b919-4d64-9ab4-978af3d84717 It also worked on my target machine, which proved the target environment innocent. I appreciate your cooperation. Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
It happened to me with firebird too. Same mistake. Il 08/03/21 02:31, Toru Takubo via fpc-pascal ha scritto: Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? My observations are as follows: 1. I work with Lazarus 2.0.12/FPC 3.2.0 release version. 2. Target machine is Raspberry Pi OS on Raspberry Pi 3 Model B V1.2. 3. My app consists of sqlite3conn and sqldb unit. 4. The problem occurred on Linux ARM. It does NOT on Windows i386/x86_64, Linux i386/x86_64 and Linux AArch64. 5. I installed "DB Browser for SQLite" on Raspi as a reference. It can write datetime field normally. My app can read it. Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
> Am 10.03.2021 um 04:59 schrieb Toru Takubo via fpc-pascal > : > >> Can you please post the output of -va of the arm compiler and provide some >> information about the arm system you are using? > > The output message with -va option can be downloaded from below. > > http://support.e-parcel.ne.jp/downloads/tmp/fpc-va.txt [0.016] (3101) Macro defined: CPUARMV4 [0.016] (3101) Macro defined: FPUFPA I am not sure how this happened but you are compiling for an ancient arm architecture, this is not going to work. FPA uses a different floating point format so this explains the problems. > > Target machine is Raspberry Pi OS on Raspberry Pi 3 Model B V1.2. > > # uname -a > Linux raspberrypi 5.4.51-v7+ #1327 SMP Thu Jul 23 10:58:46 BST 2020 armv7l > GNU/Linux > > Best Regards, > > Toru > > > > > ___ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
Dňa 9.3.2021 o 15:34 Toru Takubo via fpc-pascal napísal(a): On 2021/03/09 18:11, LacaK via fpc-pascal wrote: I did run test program on RaspberryPI: Linux+ARM and results are as expected. (FPC 3.2.0) -Laco. Thank you for your reproduction test. It may be a good news that the problem would not be in the compiler but around configuration or environment. Do you have a native compiler on RaspberryPI, or using cross compiler? I am using cross compiler. (build by FpcUpDeluxe) My compiler setting is below. Does something missing or wrong? My settings are: -Tlinux -Parm -MObjFPC -Scghi -O1 -g -gl -l -vewnhibq -Filib\arm-linux -Fu. -FUlib\arm-linux -FE. -oproject1 --- C:\lazarus\fpc\3.2.0\bin\i386-win32\fpc.exe -Tlinux -Parm -MObjFPC -Sh -CX -O3 -XX -l -vewnibq -vh- -vm5057,5028,5024,3042 -Fiobj\arm-linux -Fu. -FEobj\arm-linux -oobj\arm-linux\project1 --- If possible, would you publish your executive of the test program to try it? Uploaded to http://moja.uschovna.zoznam.sk/link/af6c3620-b919-4d64-9ab4-978af3d84717 -Laco. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On 2021/03/10 5:40, Florian Klämpfl via fpc-pascal wrote: Am 09.03.21 um 01:47 schrieb Toru Takubo via fpc-pascal: On 2021/03/08 16:54, Michael Van Canneyt via fpc-pascal wrote: On Mon, 8 Mar 2021, Toru Takubo via fpc-pascal wrote: Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? It sounds like a floating point problem. As you probably know, a TDateTime type is actually a double type. Did you try with a float value ? The DB explorer tools probably just use strings to read/write from the database, so they will not be bothere by such things, but FPC stores dataset values in 'native' formats in memory. I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. I created a simple test code, and ran on linux-i386 and linux-arm. Can you please post the output of -va of the arm compiler and provide some information about the arm system you are using? The output message with -va option can be downloaded from below. http://support.e-parcel.ne.jp/downloads/tmp/fpc-va.txt Target machine is Raspberry Pi OS on Raspberry Pi 3 Model B V1.2. # uname -a Linux raspberrypi 5.4.51-v7+ #1327 SMP Thu Jul 23 10:58:46 BST 2020 armv7l GNU/Linux Best Regards, Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
Am 09.03.21 um 01:47 schrieb Toru Takubo via fpc-pascal: On 2021/03/08 16:54, Michael Van Canneyt via fpc-pascal wrote: On Mon, 8 Mar 2021, Toru Takubo via fpc-pascal wrote: Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? It sounds like a floating point problem. As you probably know, a TDateTime type is actually a double type. Did you try with a float value ? The DB explorer tools probably just use strings to read/write from the database, so they will not be bothere by such things, but FPC stores dataset values in 'native' formats in memory. I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. I created a simple test code, and ran on linux-i386 and linux-arm. Can you please post the output of -va of the arm compiler and provide some information about the arm system you are using? ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On 2021/03/09 18:11, LacaK via fpc-pascal wrote: I did run test program on RaspberryPI: Linux+ARM and results are as expected. (FPC 3.2.0) -Laco. Thank you for your reproduction test. It may be a good news that the problem would not be in the compiler but around configuration or environment. Do you have a native compiler on RaspberryPI, or using cross compiler? My compiler setting is below. Does something missing or wrong? --- C:\lazarus\fpc\3.2.0\bin\i386-win32\fpc.exe -Tlinux -Parm -MObjFPC -Sh -CX -O3 -XX -l -vewnibq -vh- -vm5057,5028,5024,3042 -Fiobj\arm-linux -Fu. -FEobj\arm-linux -oobj\arm-linux\project1 --- If possible, would you publish your executive of the test program to try it? Toru Dňa 9.3.2021 o 1:47 Toru Takubo via fpc-pascal napísal(a): On 2021/03/08 16:54, Michael Van Canneyt via fpc-pascal wrote: On Mon, 8 Mar 2021, Toru Takubo via fpc-pascal wrote: Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? It sounds like a floating point problem. As you probably know, a TDateTime type is actually a double type. Did you try with a float value ? The DB explorer tools probably just use strings to read/write from the database, so they will not be bothere by such things, but FPC stores dataset values in 'native' formats in memory. I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. I created a simple test code, and ran on linux-i386 and linux-arm. Test on linux-i386 is OK but on linux-arm, I got unexpected values "30-12-99" as datetime and "2.12199579096527E-314" as float, which are different from values previously set. (except INT and VARCHAR fields) ---linux-i386 INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:50:23, 9-3-21 08:50:23, 0 1, 9-3-21 12:16:06, 9-3-21 12:16:06, 0.142857142857143 2, 9-3-21 15:41:49, 9-3-21 15:41:49, 0.285714285714286 3, 9-3-21 19:07:32, 9-3-21 19:07:32, 0.428571428571429 4, 9-3-21 22:33:15, 9-3-21 22:33:15, 0.571428571428571 5, 10-3-21 01:58:58, 10-3-21 01:58:58, 0.714285714285714 6, 10-3-21 05:24:40, 10-3-21 05:24:40, 0.857142857142857 7, 10-3-21 08:50:23, 10-3-21 08:50:23, 1 8, 10-3-21 12:16:06, 10-3-21 12:16:06, 1.14285714285714 9, 10-3-21 15:41:49, 10-3-21 15:41:49, 1.28571428571429 ---linux-arm- INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 1, 9-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 2, 9-3-21 15:47:18, 30-12-99, 2.12199579096527E-314 3, 9-3-21 19:13:01, 30-12-99, 2.12199579096527E-314 4, 9-3-21 22:38:44, 30-12-99, 2.12199579096527E-314 5, 10-3-21 02:04:27, 30-12-99, 2.12199579096527E-314 6, 10-3-21 05:30:10, 30-12-99, 2.12199579096527E-314 7, 10-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 8, 10-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 9, 10-3-21 15:47:19, 30-12-99, 2.12199579096527E-314 I used a shared library libsqlite3.so included in the "DB Browser for SQLite", so it should work. What can cause such a problem only in the specific field on the specific platform? Thank you in advance for any advice. Toru ___ fpc-pascal maillist -fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
I did run test program on RaspberryPI: Linux+ARM and results are as expected. (FPC 3.2.0) -Laco. Dňa 9.3.2021 o 1:47 Toru Takubo via fpc-pascal napísal(a): On 2021/03/08 16:54, Michael Van Canneyt via fpc-pascal wrote: On Mon, 8 Mar 2021, Toru Takubo via fpc-pascal wrote: Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? It sounds like a floating point problem. As you probably know, a TDateTime type is actually a double type. Did you try with a float value ? The DB explorer tools probably just use strings to read/write from the database, so they will not be bothere by such things, but FPC stores dataset values in 'native' formats in memory. I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. I created a simple test code, and ran on linux-i386 and linux-arm. Test on linux-i386 is OK but on linux-arm, I got unexpected values "30-12-99" as datetime and "2.12199579096527E-314" as float, which are different from values previously set. (except INT and VARCHAR fields) ---linux-i386 INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:50:23, 9-3-21 08:50:23, 0 1, 9-3-21 12:16:06, 9-3-21 12:16:06, 0.142857142857143 2, 9-3-21 15:41:49, 9-3-21 15:41:49, 0.285714285714286 3, 9-3-21 19:07:32, 9-3-21 19:07:32, 0.428571428571429 4, 9-3-21 22:33:15, 9-3-21 22:33:15, 0.571428571428571 5, 10-3-21 01:58:58, 10-3-21 01:58:58, 0.714285714285714 6, 10-3-21 05:24:40, 10-3-21 05:24:40, 0.857142857142857 7, 10-3-21 08:50:23, 10-3-21 08:50:23, 1 8, 10-3-21 12:16:06, 10-3-21 12:16:06, 1.14285714285714 9, 10-3-21 15:41:49, 10-3-21 15:41:49, 1.28571428571429 ---linux-arm- INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 1, 9-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 2, 9-3-21 15:47:18, 30-12-99, 2.12199579096527E-314 3, 9-3-21 19:13:01, 30-12-99, 2.12199579096527E-314 4, 9-3-21 22:38:44, 30-12-99, 2.12199579096527E-314 5, 10-3-21 02:04:27, 30-12-99, 2.12199579096527E-314 6, 10-3-21 05:30:10, 30-12-99, 2.12199579096527E-314 7, 10-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 8, 10-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 9, 10-3-21 15:47:19, 30-12-99, 2.12199579096527E-314 I used a shared library libsqlite3.so included in the "DB Browser for SQLite", so it should work. What can cause such a problem only in the specific field on the specific platform? Thank you in advance for any advice. Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On Tue, 9 Mar 2021, Toru Takubo via fpc-pascal wrote: thank you for the test program. I tested on linux 64-bit, that works OK too. When you look in the database on the arm machine with an sqlite tool, do you see the correct values or are the inserted values wrong ? (I'm trying to establish whether the problem happens during read or write) Looking into the database with "DB Browser for SQLite", those fields are all "0". If you set some value in those fields by the tool, you can read them with fpc program. Therefore problem happens on writing values, I believe. It certainly seems so, yes. I used a shared library libsqlite3.so included in the "DB Browser for SQLite", so it should work. What can cause such a problem only in the specific field on the specific platform? Seems like either a floating point issue, or an alignment issue. I know ARM has some specific behaviour with regard to alignment. Unfortunately, I have no idea what to test or the means to test it. Someone more familiar with ARM will need ro test. It would be better for me to create a bug report? At this point I think this would indeed be necessary. So, yes, please add a bugreport ! Michael.___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On 2021/03/09 17:07, Michael Van Canneyt via fpc-pascal wrote: On Tue, 9 Mar 2021, Toru Takubo via fpc-pascal wrote: I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. I created a simple test code, and ran on linux-i386 and linux-arm. Test on linux-i386 is OK but on linux-arm, I got unexpected values "30-12-99" as datetime and "2.12199579096527E-314" as float, which are different from values previously set. (except INT and VARCHAR fields) ---linux-i386 INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:50:23, 9-3-21 08:50:23, 0 1, 9-3-21 12:16:06, 9-3-21 12:16:06, 0.142857142857143 2, 9-3-21 15:41:49, 9-3-21 15:41:49, 0.285714285714286 3, 9-3-21 19:07:32, 9-3-21 19:07:32, 0.428571428571429 4, 9-3-21 22:33:15, 9-3-21 22:33:15, 0.571428571428571 5, 10-3-21 01:58:58, 10-3-21 01:58:58, 0.714285714285714 6, 10-3-21 05:24:40, 10-3-21 05:24:40, 0.857142857142857 7, 10-3-21 08:50:23, 10-3-21 08:50:23, 1 8, 10-3-21 12:16:06, 10-3-21 12:16:06, 1.14285714285714 9, 10-3-21 15:41:49, 10-3-21 15:41:49, 1.28571428571429 ---linux-arm- INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 1, 9-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 2, 9-3-21 15:47:18, 30-12-99, 2.12199579096527E-314 3, 9-3-21 19:13:01, 30-12-99, 2.12199579096527E-314 4, 9-3-21 22:38:44, 30-12-99, 2.12199579096527E-314 5, 10-3-21 02:04:27, 30-12-99, 2.12199579096527E-314 6, 10-3-21 05:30:10, 30-12-99, 2.12199579096527E-314 7, 10-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 8, 10-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 9, 10-3-21 15:47:19, 30-12-99, 2.12199579096527E-314 thank you for the test program. I tested on linux 64-bit, that works OK too. When you look in the database on the arm machine with an sqlite tool, do you see the correct values or are the inserted values wrong ? (I'm trying to establish whether the problem happens during read or write) Looking into the database with "DB Browser for SQLite", those fields are all "0". If you set some value in those fields by the tool, you can read them with fpc program. Therefore problem happens on writing values, I believe. I used a shared library libsqlite3.so included in the "DB Browser for SQLite", so it should work. What can cause such a problem only in the specific field on the specific platform? Seems like either a floating point issue, or an alignment issue. I know ARM has some specific behaviour with regard to alignment. Unfortunately, I have no idea what to test or the means to test it. Someone more familiar with ARM will need ro test. It would be better for me to create a bug report? Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
It happened to me with Firebird too. Only that the error gave it to me
in reading, that is db.fieldByName ('cc'). AsDateTime
Il 08/03/21 02:31, Toru Takubo via fpc-pascal ha scritto:
Hi,
I am developing my app on Windows and building apps for other
platforms by using cross compiler. Now I have a problem only
occurred on Linux ARM.
The problem is that it cannot write datetime field on sqlite3
database. It can read/write other fields like int, varchar
or blob, but always write zero in datetime (maybe float as well)
field.
Does anyone have an idea about this issue? I am not sure it is
fpc issue, but better to report bug?
My observations are as follows:
1. I work with Lazarus 2.0.12/FPC 3.2.0 release version.
2. Target machine is Raspberry Pi OS on Raspberry Pi 3 Model B V1.2.
3. My app consists of sqlite3conn and sqldb unit.
4. The problem occurred on Linux ARM. It does NOT on Windows i386/x86_64,
Linux i386/x86_64 and Linux AArch64.
5. I installed "DB Browser for SQLite" on Raspi as a reference. It can
write datetime field normally. My app can read it.
Toru
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Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On Tue, 9 Mar 2021, Toru Takubo via fpc-pascal wrote: I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. I created a simple test code, and ran on linux-i386 and linux-arm. Test on linux-i386 is OK but on linux-arm, I got unexpected values "30-12-99" as datetime and "2.12199579096527E-314" as float, which are different from values previously set. (except INT and VARCHAR fields) ---linux-i386 INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:50:23, 9-3-21 08:50:23, 0 1, 9-3-21 12:16:06, 9-3-21 12:16:06, 0.142857142857143 2, 9-3-21 15:41:49, 9-3-21 15:41:49, 0.285714285714286 3, 9-3-21 19:07:32, 9-3-21 19:07:32, 0.428571428571429 4, 9-3-21 22:33:15, 9-3-21 22:33:15, 0.571428571428571 5, 10-3-21 01:58:58, 10-3-21 01:58:58, 0.714285714285714 6, 10-3-21 05:24:40, 10-3-21 05:24:40, 0.857142857142857 7, 10-3-21 08:50:23, 10-3-21 08:50:23, 1 8, 10-3-21 12:16:06, 10-3-21 12:16:06, 1.14285714285714 9, 10-3-21 15:41:49, 10-3-21 15:41:49, 1.28571428571429 ---linux-arm- INT, VARCHAR, DATETIME, DOUBLE 0, 9-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 1, 9-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 2, 9-3-21 15:47:18, 30-12-99, 2.12199579096527E-314 3, 9-3-21 19:13:01, 30-12-99, 2.12199579096527E-314 4, 9-3-21 22:38:44, 30-12-99, 2.12199579096527E-314 5, 10-3-21 02:04:27, 30-12-99, 2.12199579096527E-314 6, 10-3-21 05:30:10, 30-12-99, 2.12199579096527E-314 7, 10-3-21 08:55:53, 30-12-99, 2.12199579096527E-314 8, 10-3-21 12:21:36, 30-12-99, 2.12199579096527E-314 9, 10-3-21 15:47:19, 30-12-99, 2.12199579096527E-314 thank you for the test program. I tested on linux 64-bit, that works OK too. When you look in the database on the arm machine with an sqlite tool, do you see the correct values or are the inserted values wrong ? (I'm trying to establish whether the problem happens during read or write) I used a shared library libsqlite3.so included in the "DB Browser for SQLite", so it should work. What can cause such a problem only in the specific field on the specific platform? Seems like either a floating point issue, or an alignment issue. I know ARM has some specific behaviour with regard to alignment. Unfortunately, I have no idea what to test or the means to test it. Someone more familiar with ARM will need ro test. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On 2021/03/08 16:54, Michael Van Canneyt via fpc-pascal wrote:
On Mon, 8 Mar 2021, Toru Takubo via fpc-pascal wrote:
Hi,
I am developing my app on Windows and building apps for other
platforms by using cross compiler. Now I have a problem only
occurred on Linux ARM.
The problem is that it cannot write datetime field on sqlite3
database. It can read/write other fields like int, varchar
or blob, but always write zero in datetime (maybe float as well)
field.
Does anyone have an idea about this issue? I am not sure it is
fpc issue, but better to report bug?
It sounds like a floating point problem. As you probably know, a TDateTime
type is actually a double type. Did you try with a float value ?
The DB explorer tools probably just use strings to read/write from the
database, so they will not be bothere by such things, but FPC stores dataset
values in 'native' formats in memory.
I don't know what to advise to further investigate the issue, One thing to
try would be to test whether normal float arithmetic or date arithmetic works.
If not, then the compiler people will need to give more advice.
I created a simple test code, and ran on linux-i386 and linux-arm.
Test on linux-i386 is OK but on linux-arm, I got unexpected values
"30-12-99" as datetime and "2.12199579096527E-314" as float, which are different
from values previously set. (except INT and VARCHAR fields)
---linux-i386
INT, VARCHAR, DATETIME, DOUBLE
0, 9-3-21 08:50:23, 9-3-21 08:50:23, 0
1, 9-3-21 12:16:06, 9-3-21 12:16:06, 0.142857142857143
2, 9-3-21 15:41:49, 9-3-21 15:41:49, 0.285714285714286
3, 9-3-21 19:07:32, 9-3-21 19:07:32, 0.428571428571429
4, 9-3-21 22:33:15, 9-3-21 22:33:15, 0.571428571428571
5, 10-3-21 01:58:58, 10-3-21 01:58:58, 0.714285714285714
6, 10-3-21 05:24:40, 10-3-21 05:24:40, 0.857142857142857
7, 10-3-21 08:50:23, 10-3-21 08:50:23, 1
8, 10-3-21 12:16:06, 10-3-21 12:16:06, 1.14285714285714
9, 10-3-21 15:41:49, 10-3-21 15:41:49, 1.28571428571429
---linux-arm-
INT, VARCHAR, DATETIME, DOUBLE
0, 9-3-21 08:55:53, 30-12-99, 2.12199579096527E-314
1, 9-3-21 12:21:36, 30-12-99, 2.12199579096527E-314
2, 9-3-21 15:47:18, 30-12-99, 2.12199579096527E-314
3, 9-3-21 19:13:01, 30-12-99, 2.12199579096527E-314
4, 9-3-21 22:38:44, 30-12-99, 2.12199579096527E-314
5, 10-3-21 02:04:27, 30-12-99, 2.12199579096527E-314
6, 10-3-21 05:30:10, 30-12-99, 2.12199579096527E-314
7, 10-3-21 08:55:53, 30-12-99, 2.12199579096527E-314
8, 10-3-21 12:21:36, 30-12-99, 2.12199579096527E-314
9, 10-3-21 15:47:19, 30-12-99, 2.12199579096527E-314
I used a shared library libsqlite3.so included in the "DB Browser for SQLite",
so it should work. What can cause such a problem only in the specific field
on the specific platform?
Thank you in advance for any advice.
Toru
program project1;
uses
{$IFDEF UNIX}
cthreads,
{$ENDIF}
SysUtils, sqlite3conn, sqldb;
var
DBC: TSQLite3Connection;
QRY: TSQLQuery;
TRN: TSQLTransaction;
i: Integer;
nw: TDateTime;
begin
DBC:=TSQLite3Connection.Create(nil);
QRY:=TSQLQuery.Create(nil);
TRN:=TSQLTransaction.Create(nil);
try
//Initialize Connection
DBC.DatabaseName:=ExtractFileDir(ParamStr(0))+PathDelim+'test.db';
QRY.DataBase:=DBC;
TRN.DataBase:=DBC;
QRY.Transaction:=TRN;
//create database
DeleteFile(DBC.DatabaseName);
DBC.CreateDB;
QRY.SQL.Text:=
'create table TEST ('+
'VALUE_INT int,'+
'VALUE_VARCHAR varchar(20),'+
'VALUE_DATETIME datetime,'+
'VALUE_DOUBLE double)';
TRN.StartTransaction;
try
QRY.ExecSQL;
TRN.Commit;
except
TRN.Rollback;
raise;
end;
//insert values into table
for i:=0 to 9 do begin
nw:=Now+i/7;
QRY.SQL.Text:=
'insert into TEST ('+
'VALUE_INT,'+
'VALUE_VARCHAR,'+
'VALUE_DATETIME,'+
'VALUE_DOUBLE'+
') values ('+
':VALUE_INT,'+
':VALUE_VARCHAR,'+
':VALUE_DATETIME,'+
':VALUE_DOUBLE)';
QRY.ParamByName('VALUE_INT').AsInteger:=i;
QRY.ParamByName('VALUE_VARCHAR').AsString:=DateTimeToStr(nw);
QRY.ParamByName('VALUE_DATETIME').AsDateTime:=nw;
QRY.ParamByName('VALUE_DOUBLE').AsFloat:=i/7;
QRY.Prepare;
try
QRY.ExecSQL;
TRN.Commit;
except
TRN.Rollback;
raise;
end;
end;
//show table
QRY.SQL.Text:='select * from TEST';
try
QRY.Open;
Writeln('INT, VARCHAR, DATETIME, DOUBLE');
while not QRY.EOF do begin
Writeln(
IntToStr(QRY.FieldByName('VALUE_INT').AsInteger)+', '+
QRY.FieldByName('VALUE_VARCHAR').AsString+', '+
DateTimeToStr(QRY.FieldByName('VALUE_DATETIME').AsDateTime)+', '+
FloatToStr(QRY.FieldByName('VALUE_DOUBLE').AsFloat)
);
QRY.Next;
end;
TRN.Commit;
except
TRN.Rollback;
Re: [fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
On Mon, 8 Mar 2021, Toru Takubo via fpc-pascal wrote: Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? It sounds like a floating point problem. As you probably know, a TDateTime type is actually a double type. Did you try with a float value ? The DB explorer tools probably just use strings to read/write from the database, so they will not be bothere by such things, but FPC stores dataset values in 'native' formats in memory. I don't know what to advise to further investigate the issue, One thing to try would be to test whether normal float arithmetic or date arithmetic works. If not, then the compiler people will need to give more advice. Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] Cannot write datetime field on sqlite3 database on ARM
Hi, I am developing my app on Windows and building apps for other platforms by using cross compiler. Now I have a problem only occurred on Linux ARM. The problem is that it cannot write datetime field on sqlite3 database. It can read/write other fields like int, varchar or blob, but always write zero in datetime (maybe float as well) field. Does anyone have an idea about this issue? I am not sure it is fpc issue, but better to report bug? My observations are as follows: 1. I work with Lazarus 2.0.12/FPC 3.2.0 release version. 2. Target machine is Raspberry Pi OS on Raspberry Pi 3 Model B V1.2. 3. My app consists of sqlite3conn and sqldb unit. 4. The problem occurred on Linux ARM. It does NOT on Windows i386/x86_64, Linux i386/x86_64 and Linux AArch64. 5. I installed "DB Browser for SQLite" on Raspi as a reference. It can write datetime field normally. My app can read it. Toru ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
